90418480

素因数分解:

$2^4\times 5^1\times {\mathrm{239}}^1\times {\mathrm{4729}}^1$

素因数の和:4981

約数の個数: 40

約数和(自身を含む): 211147200

約数和(自身を除く): 120728720

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 239, 478, 956, 1195, 1912, 2390, 3824, 4729, 4780, 9458, 9560, 18916, 19120, 23645, 37832, 47290, 75664, 94580, 189160, 378320, 1130231, 2260462, 4520924, 5651155, 9041848, 11302310, 18083696, 22604620, 45209240, 90418480]

約数ペア:

[(1, 90418480), (2, 45209240), (4, 22604620), (5, 18083696), (8, 11302310), (10, 9041848), (16, 5651155), (20, 4520924), (40, 2260462), (80, 1130231), (239, 378320), (478, 189160), (956, 94580), (1195, 75664), (1912, 47290), (2390, 37832), (3824, 23645), (4729, 19120), (4780, 18916), (9458, 9560)]