320428400

素因数分解:

$2^4\times 5^2\times {\mathrm{31}}^1\times {\mathrm{25841}}^1$

素因数の和:25890

約数の個数: 60

約数和(自身を含む): 794693184

約数和(自身を除く): 474264784

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 31, 40, 50, 62, 80, 100, 124, 155, 200, 248, 310, 400, 496, 620, 775, 1240, 1550, 2480, 3100, 6200, 12400, 25841, 51682, 103364, 129205, 206728, 258410, 413456, 516820, 646025, 801071, 1033640, 1292050, 1602142, 2067280, 2584100, 3204284, 4005355, 5168200, 6408568, 8010710, 10336400, 12817136, 16021420, 20026775, 32042840, 40053550, 64085680, 80107100, 160214200, 320428400]

約数ペア:

[(1, 320428400), (2, 160214200), (4, 80107100), (5, 64085680), (8, 40053550), (10, 32042840), (16, 20026775), (20, 16021420), (25, 12817136), (31, 10336400), (40, 8010710), (50, 6408568), (62, 5168200), (80, 4005355), (100, 3204284), (124, 2584100), (155, 2067280), (200, 1602142), (248, 1292050), (310, 1033640), (400, 801071), (496, 646025), (620, 516820), (775, 413456), (1240, 258410), (1550, 206728), (2480, 129205), (3100, 103364), (6200, 51682), (12400, 25841)]