21781891920

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{127}}^2\times {\mathrm{331}}^1$

素因数の和:618

約数の個数: 240

約数和(自身を含む): 72280963008

約数和(自身を除く): 50499071088

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 17, 20, 24, 30, 34, 40, 48, 51, 60, 68, 80, 85, 102, 120, 127, 136, 170, 204, 240, 254, 255, 272, 331, 340, 381, 408, 508, 510, 635, 662, 680, 762, 816, 993, 1016, 1020, 1270, 1324, 1360, 1524, 1655, 1905, 1986, 2032, 2040, 2159, 2540, 2648, 3048, 3310, 3810, 3972, 4080, 4318, 4965, 5080, 5296, 5627, 6096, 6477, 6620, 7620, 7944, 8636, 9930, 10160, 10795, 11254, 12954, 13240, 15240, 15888, 16129, 16881, 17272, 19860, 21590, 22508, 25908, 26480, 28135, 30480, 32258, 32385, 33762, 34544, 39720, 42037, 43180, 45016, 48387, 51816, 56270, 64516, 64770, 67524, 79440, 80645, 84074, 84405, 86360, 90032, 96774, 103632, 112540, 126111, 129032, 129540, 135048, 161290, 168148, 168810, 172720, 193548, 210185, 225080, 241935, 252222, 258064, 259080, 270096, 274193, 322580, 336296, 337620, 387096, 420370, 450160, 483870, 504444, 518160, 548386, 630555, 645160, 672592, 675240, 714629, 774192, 822579, 840740, 967740, 1008888, 1096772, 1261110, 1290320, 1350480, 1370965, 1429258, 1645158, 1681480, 1935480, 2017776, 2143887, 2193544, 2522220, 2741930, 2858516, 3290316, 3362960, 3573145, 3870960, 4112895, 4287774, 4387088, 5044440, 5338699, 5483860, 5717032, 6580632, 7146290, 8225790, 8575548, 10088880, 10677398, 10719435, 10967720, 11434064, 13161264, 14292580, 16016097, 16451580, 17151096, 21354796, 21438870, 21935440, 26693495, 28585160, 32032194, 32903160, 34302192, 42709592, 42877740, 53386990, 57170320, 64064388, 65806320, 80080485, 85419184, 85755480, 90757883, 106773980, 128128776, 160160970, 171510960, 181515766, 213547960, 256257552, 272273649, 320321940, 363031532, 427095920, 453789415, 544547298, 640643880, 726063064, 907578830, 1089094596, 1281287760, 1361368245, 1452126128, 1815157660, 2178189192, 2722736490, 3630315320, 4356378384, 5445472980, 7260630640, 10890945960, 21781891920]

約数ペア:

[(1, 21781891920), (2, 10890945960), (3, 7260630640), (4, 5445472980), (5, 4356378384), (6, 3630315320), (8, 2722736490), (10, 2178189192), (12, 1815157660), (15, 1452126128), (16, 1361368245), (17, 1281287760), (20, 1089094596), (24, 907578830), (30, 726063064), (34, 640643880), (40, 544547298), (48, 453789415), (51, 427095920), (60, 363031532), (68, 320321940), (80, 272273649), (85, 256257552), (102, 213547960), (120, 181515766), (127, 171510960), (136, 160160970), (170, 128128776), (204, 106773980), (240, 90757883), (254, 85755480), (255, 85419184), (272, 80080485), (331, 65806320), (340, 64064388), (381, 57170320), (408, 53386990), (508, 42877740), (510, 42709592), (635, 34302192), (662, 32903160), (680, 32032194), (762, 28585160), (816, 26693495), (993, 21935440), (1016, 21438870), (1020, 21354796), (1270, 17151096), (1324, 16451580), (1360, 16016097), (1524, 14292580), (1655, 13161264), (1905, 11434064), (1986, 10967720), (2032, 10719435), (2040, 10677398), (2159, 10088880), (2540, 8575548), (2648, 8225790), (3048, 7146290), (3310, 6580632), (3810, 5717032), (3972, 5483860), (4080, 5338699), (4318, 5044440), (4965, 4387088), (5080, 4287774), (5296, 4112895), (5627, 3870960), (6096, 3573145), (6477, 3362960), (6620, 3290316), (7620, 2858516), (7944, 2741930), (8636, 2522220), (9930, 2193544), (10160, 2143887), (10795, 2017776), (11254, 1935480), (12954, 1681480), (13240, 1645158), (15240, 1429258), (15888, 1370965), (16129, 1350480), (16881, 1290320), (17272, 1261110), (19860, 1096772), (21590, 1008888), (22508, 967740), (25908, 840740), (26480, 822579), (28135, 774192), (30480, 714629), (32258, 675240), (32385, 672592), (33762, 645160), (34544, 630555), (39720, 548386), (42037, 518160), (43180, 504444), (45016, 483870), (48387, 450160), (51816, 420370), (56270, 387096), (64516, 337620), (64770, 336296), (67524, 322580), (79440, 274193), (80645, 270096), (84074, 259080), (84405, 258064), (86360, 252222), (90032, 241935), (96774, 225080), (103632, 210185), (112540, 193548), (126111, 172720), (129032, 168810), (129540, 168148), (135048, 161290)]