21358576

素因数分解:

$2^4\times {\mathrm{53}}^1\times {\mathrm{89}}^1\times {\mathrm{283}}^1$

素因数の和:433

約数の個数: 40

約数和(自身を含む): 42787440

約数和(自身を除く): 21428864

約数列:

[1, 2, 4, 8, 16, 53, 89, 106, 178, 212, 283, 356, 424, 566, 712, 848, 1132, 1424, 2264, 4528, 4717, 9434, 14999, 18868, 25187, 29998, 37736, 50374, 59996, 75472, 100748, 119992, 201496, 239984, 402992, 1334911, 2669822, 5339644, 10679288, 21358576]

約数ペア:

[(1, 21358576), (2, 10679288), (4, 5339644), (8, 2669822), (16, 1334911), (53, 402992), (89, 239984), (106, 201496), (178, 119992), (212, 100748), (283, 75472), (356, 59996), (424, 50374), (566, 37736), (712, 29998), (848, 25187), (1132, 18868), (1424, 14999), (2264, 9434), (4528, 4717)]