638935920

素因数分解:

$2^4\times 3^2\times 5^1\times 7^1\times {\mathrm{331}}^1\times {\mathrm{383}}^1$

素因数の和:740

約数の個数: 240

約数和(自身を含む): 2466127872

約数和(自身を除く): 1827191952

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 14, 15, 16, 18, 20, 21, 24, 28, 30, 35, 36, 40, 42, 45, 48, 56, 60, 63, 70, 72, 80, 84, 90, 105, 112, 120, 126, 140, 144, 168, 180, 210, 240, 252, 280, 315, 331, 336, 360, 383, 420, 504, 560, 630, 662, 720, 766, 840, 993, 1008, 1149, 1260, 1324, 1532, 1655, 1680, 1915, 1986, 2298, 2317, 2520, 2648, 2681, 2979, 3064, 3310, 3447, 3830, 3972, 4596, 4634, 4965, 5040, 5296, 5362, 5745, 5958, 6128, 6620, 6894, 6951, 7660, 7944, 8043, 9192, 9268, 9930, 10724, 11490, 11585, 11916, 13240, 13405, 13788, 13902, 14895, 15320, 15888, 16086, 17235, 18384, 18536, 19860, 20853, 21448, 22980, 23170, 23832, 24129, 26480, 26810, 27576, 27804, 29790, 30640, 32172, 34470, 34755, 37072, 39720, 40215, 41706, 42896, 45960, 46340, 47664, 48258, 53620, 55152, 55608, 59580, 64344, 68940, 69510, 79440, 80430, 83412, 91920, 92680, 96516, 104265, 107240, 111216, 119160, 120645, 126773, 128688, 137880, 139020, 160860, 166824, 185360, 193032, 208530, 214480, 238320, 241290, 253546, 275760, 278040, 321720, 333648, 380319, 386064, 417060, 482580, 507092, 556080, 633865, 643440, 760638, 834120, 887411, 965160, 1014184, 1140957, 1267730, 1521276, 1668240, 1774822, 1901595, 1930320, 2028368, 2281914, 2535460, 2662233, 3042552, 3549644, 3803190, 4437055, 4563828, 5070920, 5324466, 5704785, 6085104, 7099288, 7606380, 7986699, 8874110, 9127656, 10141840, 10648932, 11409570, 13311165, 14198576, 15212760, 15973398, 17748220, 18255312, 21297864, 22819140, 26622330, 30425520, 31946796, 35496440, 39933495, 42595728, 45638280, 53244660, 63893592, 70992880, 79866990, 91276560, 106489320, 127787184, 159733980, 212978640, 319467960, 638935920]

約数ペア:

[(1, 638935920), (2, 319467960), (3, 212978640), (4, 159733980), (5, 127787184), (6, 106489320), (7, 91276560), (8, 79866990), (9, 70992880), (10, 63893592), (12, 53244660), (14, 45638280), (15, 42595728), (16, 39933495), (18, 35496440), (20, 31946796), (21, 30425520), (24, 26622330), (28, 22819140), (30, 21297864), (35, 18255312), (36, 17748220), (40, 15973398), (42, 15212760), (45, 14198576), (48, 13311165), (56, 11409570), (60, 10648932), (63, 10141840), (70, 9127656), (72, 8874110), (80, 7986699), (84, 7606380), (90, 7099288), (105, 6085104), (112, 5704785), (120, 5324466), (126, 5070920), (140, 4563828), (144, 4437055), (168, 3803190), (180, 3549644), (210, 3042552), (240, 2662233), (252, 2535460), (280, 2281914), (315, 2028368), (331, 1930320), (336, 1901595), (360, 1774822), (383, 1668240), (420, 1521276), (504, 1267730), (560, 1140957), (630, 1014184), (662, 965160), (720, 887411), (766, 834120), (840, 760638), (993, 643440), (1008, 633865), (1149, 556080), (1260, 507092), (1324, 482580), (1532, 417060), (1655, 386064), (1680, 380319), (1915, 333648), (1986, 321720), (2298, 278040), (2317, 275760), (2520, 253546), (2648, 241290), (2681, 238320), (2979, 214480), (3064, 208530), (3310, 193032), (3447, 185360), (3830, 166824), (3972, 160860), (4596, 139020), (4634, 137880), (4965, 128688), (5040, 126773), (5296, 120645), (5362, 119160), (5745, 111216), (5958, 107240), (6128, 104265), (6620, 96516), (6894, 92680), (6951, 91920), (7660, 83412), (7944, 80430), (8043, 79440), (9192, 69510), (9268, 68940), (9930, 64344), (10724, 59580), (11490, 55608), (11585, 55152), (11916, 53620), (13240, 48258), (13405, 47664), (13788, 46340), (13902, 45960), (14895, 42896), (15320, 41706), (15888, 40215), (16086, 39720), (17235, 37072), (18384, 34755), (18536, 34470), (19860, 32172), (20853, 30640), (21448, 29790), (22980, 27804), (23170, 27576), (23832, 26810), (24129, 26480)]