90778640

素因数分解:

$2^4\times 5^1\times {\mathrm{17}}^1\times {\mathrm{66749}}^1$

素因数の和:66779

約数の個数: 40

約数和(自身を含む): 223479000

約数和(自身を除く): 132700360

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 34, 40, 68, 80, 85, 136, 170, 272, 340, 680, 1360, 66749, 133498, 266996, 333745, 533992, 667490, 1067984, 1134733, 1334980, 2269466, 2669960, 4538932, 5339920, 5673665, 9077864, 11347330, 18155728, 22694660, 45389320, 90778640]

約数ペア:

[(1, 90778640), (2, 45389320), (4, 22694660), (5, 18155728), (8, 11347330), (10, 9077864), (16, 5673665), (17, 5339920), (20, 4538932), (34, 2669960), (40, 2269466), (68, 1334980), (80, 1134733), (85, 1067984), (136, 667490), (170, 533992), (272, 333745), (340, 266996), (680, 133498), (1360, 66749)]