401335920

素因数分解:

$2^4\times 3^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{17981}}^1$

素因数の和:18031

約数の個数: 120

約数和(自身を含む): 1391375232

約数和(自身を除く): 990039312

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 30, 31, 36, 40, 45, 48, 60, 62, 72, 80, 90, 93, 120, 124, 144, 155, 180, 186, 240, 248, 279, 310, 360, 372, 465, 496, 558, 620, 720, 744, 930, 1116, 1240, 1395, 1488, 1860, 2232, 2480, 2790, 3720, 4464, 5580, 7440, 11160, 17981, 22320, 35962, 53943, 71924, 89905, 107886, 143848, 161829, 179810, 215772, 269715, 287696, 323658, 359620, 431544, 539430, 557411, 647316, 719240, 809145, 863088, 1078860, 1114822, 1294632, 1438480, 1618290, 1672233, 2157720, 2229644, 2589264, 2787055, 3236580, 3344466, 4315440, 4459288, 5016699, 5574110, 6473160, 6688932, 8361165, 8918576, 10033398, 11148220, 12946320, 13377864, 16722330, 20066796, 22296440, 25083495, 26755728, 33444660, 40133592, 44592880, 50166990, 66889320, 80267184, 100333980, 133778640, 200667960, 401335920]

約数ペア:

[(1, 401335920), (2, 200667960), (3, 133778640), (4, 100333980), (5, 80267184), (6, 66889320), (8, 50166990), (9, 44592880), (10, 40133592), (12, 33444660), (15, 26755728), (16, 25083495), (18, 22296440), (20, 20066796), (24, 16722330), (30, 13377864), (31, 12946320), (36, 11148220), (40, 10033398), (45, 8918576), (48, 8361165), (60, 6688932), (62, 6473160), (72, 5574110), (80, 5016699), (90, 4459288), (93, 4315440), (120, 3344466), (124, 3236580), (144, 2787055), (155, 2589264), (180, 2229644), (186, 2157720), (240, 1672233), (248, 1618290), (279, 1438480), (310, 1294632), (360, 1114822), (372, 1078860), (465, 863088), (496, 809145), (558, 719240), (620, 647316), (720, 557411), (744, 539430), (930, 431544), (1116, 359620), (1240, 323658), (1395, 287696), (1488, 269715), (1860, 215772), (2232, 179810), (2480, 161829), (2790, 143848), (3720, 107886), (4464, 89905), (5580, 71924), (7440, 53943), (11160, 35962), (17981, 22320)]