21358768

素因数分解:

$2^4\times {\mathrm{37}}^1\times {\mathrm{109}}^1\times {\mathrm{331}}^1$

素因数の和:485

約数の個数: 40

約数和(自身を含む): 43020560

約数和(自身を除く): 21661792

約数列:

[1, 2, 4, 8, 16, 37, 74, 109, 148, 218, 296, 331, 436, 592, 662, 872, 1324, 1744, 2648, 4033, 5296, 8066, 12247, 16132, 24494, 32264, 36079, 48988, 64528, 72158, 97976, 144316, 195952, 288632, 577264, 1334923, 2669846, 5339692, 10679384, 21358768]

約数ペア:

[(1, 21358768), (2, 10679384), (4, 5339692), (8, 2669846), (16, 1334923), (37, 577264), (74, 288632), (109, 195952), (148, 144316), (218, 97976), (296, 72158), (331, 64528), (436, 48988), (592, 36079), (662, 32264), (872, 24494), (1324, 16132), (1744, 12247), (2648, 8066), (4033, 5296)]