90278960

素因数分解:

$2^4\times 5^1\times {\mathrm{257}}^1\times {\mathrm{4391}}^1$

素因数の和:4661

約数の個数: 40

約数和(自身を含む): 210763296

約数和(自身を除く): 120484336

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 257, 514, 1028, 1285, 2056, 2570, 4112, 4391, 5140, 8782, 10280, 17564, 20560, 21955, 35128, 43910, 70256, 87820, 175640, 351280, 1128487, 2256974, 4513948, 5642435, 9027896, 11284870, 18055792, 22569740, 45139480, 90278960]

約数ペア:

[(1, 90278960), (2, 45139480), (4, 22569740), (5, 18055792), (8, 11284870), (10, 9027896), (16, 5642435), (20, 4513948), (40, 2256974), (80, 1128487), (257, 351280), (514, 175640), (1028, 87820), (1285, 70256), (2056, 43910), (2570, 35128), (4112, 21955), (4391, 20560), (5140, 17564), (8782, 10280)]