420199450400

素因数分解:

$2^5\times 5^2\times {\mathrm{12511}}^1\times {\mathrm{41983}}^1$

素因数の和:54514

約数の個数: 72

約数和(自身を含む): 1025918337024

約数和(自身を除く): 605718886624

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 80, 100, 160, 200, 400, 800, 12511, 25022, 41983, 50044, 62555, 83966, 100088, 125110, 167932, 200176, 209915, 250220, 312775, 335864, 400352, 419830, 500440, 625550, 671728, 839660, 1000880, 1049575, 1251100, 1343456, 1679320, 2001760, 2099150, 2502200, 3358640, 4198300, 5004400, 6717280, 8396600, 10008800, 16793200, 33586400, 525249313, 1050498626, 2100997252, 2626246565, 4201994504, 5252493130, 8403989008, 10504986260, 13131232825, 16807978016, 21009972520, 26262465650, 42019945040, 52524931300, 84039890080, 105049862600, 210099725200, 420199450400]

約数ペア:

[(1, 420199450400), (2, 210099725200), (4, 105049862600), (5, 84039890080), (8, 52524931300), (10, 42019945040), (16, 26262465650), (20, 21009972520), (25, 16807978016), (32, 13131232825), (40, 10504986260), (50, 8403989008), (80, 5252493130), (100, 4201994504), (160, 2626246565), (200, 2100997252), (400, 1050498626), (800, 525249313), (12511, 33586400), (25022, 16793200), (41983, 10008800), (50044, 8396600), (62555, 6717280), (83966, 5004400), (100088, 4198300), (125110, 3358640), (167932, 2502200), (200176, 2099150), (209915, 2001760), (250220, 1679320), (312775, 1343456), (335864, 1251100), (400352, 1049575), (419830, 1000880), (500440, 839660), (625550, 671728)]