20985480

素因数分解:

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

素因数の和:170

約数の個数: 192

約数和(自身を含む): 75479040

約数和(自身を除く): 54493560

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 17, 18, 20, 24, 27, 30, 34, 36, 40, 45, 51, 54, 60, 68, 72, 81, 85, 90, 102, 108, 120, 127, 135, 136, 153, 162, 170, 180, 204, 216, 243, 254, 255, 270, 306, 324, 340, 360, 381, 405, 408, 459, 486, 508, 510, 540, 612, 635, 648, 680, 762, 765, 810, 918, 972, 1016, 1020, 1080, 1143, 1215, 1224, 1270, 1377, 1524, 1530, 1620, 1836, 1905, 1944, 2040, 2159, 2286, 2295, 2430, 2540, 2754, 3048, 3060, 3240, 3429, 3672, 3810, 4131, 4318, 4572, 4590, 4860, 5080, 5508, 5715, 6120, 6477, 6858, 6885, 7620, 8262, 8636, 9144, 9180, 9720, 10287, 10795, 11016, 11430, 12954, 13716, 13770, 15240, 16524, 17145, 17272, 18360, 19431, 20574, 20655, 21590, 22860, 25908, 27432, 27540, 30861, 32385, 33048, 34290, 38862, 41148, 41310, 43180, 45720, 51435, 51816, 55080, 58293, 61722, 64770, 68580, 77724, 82296, 82620, 86360, 97155, 102870, 116586, 123444, 129540, 137160, 154305, 155448, 165240, 174879, 194310, 205740, 233172, 246888, 259080, 291465, 308610, 349758, 388620, 411480, 466344, 524637, 582930, 617220, 699516, 777240, 874395, 1049274, 1165860, 1234440, 1399032, 1748790, 2098548, 2331720, 2623185, 3497580, 4197096, 5246370, 6995160, 10492740, 20985480]

約数ペア:

[(1, 20985480), (2, 10492740), (3, 6995160), (4, 5246370), (5, 4197096), (6, 3497580), (8, 2623185), (9, 2331720), (10, 2098548), (12, 1748790), (15, 1399032), (17, 1234440), (18, 1165860), (20, 1049274), (24, 874395), (27, 777240), (30, 699516), (34, 617220), (36, 582930), (40, 524637), (45, 466344), (51, 411480), (54, 388620), (60, 349758), (68, 308610), (72, 291465), (81, 259080), (85, 246888), (90, 233172), (102, 205740), (108, 194310), (120, 174879), (127, 165240), (135, 155448), (136, 154305), (153, 137160), (162, 129540), (170, 123444), (180, 116586), (204, 102870), (216, 97155), (243, 86360), (254, 82620), (255, 82296), (270, 77724), (306, 68580), (324, 64770), (340, 61722), (360, 58293), (381, 55080), (405, 51816), (408, 51435), (459, 45720), (486, 43180), (508, 41310), (510, 41148), (540, 38862), (612, 34290), (635, 33048), (648, 32385), (680, 30861), (762, 27540), (765, 27432), (810, 25908), (918, 22860), (972, 21590), (1016, 20655), (1020, 20574), (1080, 19431), (1143, 18360), (1215, 17272), (1224, 17145), (1270, 16524), (1377, 15240), (1524, 13770), (1530, 13716), (1620, 12954), (1836, 11430), (1905, 11016), (1944, 10795), (2040, 10287), (2159, 9720), (2286, 9180), (2295, 9144), (2430, 8636), (2540, 8262), (2754, 7620), (3048, 6885), (3060, 6858), (3240, 6477), (3429, 6120), (3672, 5715), (3810, 5508), (4131, 5080), (4318, 4860), (4572, 4590)]