18951736

素因数分解:

$2^3\times {\mathrm{17}}^1\times {\mathrm{331}}^1\times {\mathrm{421}}^1$

素因数の和:775

約数の個数: 32

約数和(自身を含む): 37828080

約数和(自身を除く): 18876344

約数列:

[1, 2, 4, 8, 17, 34, 68, 136, 331, 421, 662, 842, 1324, 1684, 2648, 3368, 5627, 7157, 11254, 14314, 22508, 28628, 45016, 57256, 139351, 278702, 557404, 1114808, 2368967, 4737934, 9475868, 18951736]

約数ペア:

[(1, 18951736), (2, 9475868), (4, 4737934), (8, 2368967), (17, 1114808), (34, 557404), (68, 278702), (136, 139351), (331, 57256), (421, 45016), (662, 28628), (842, 22508), (1324, 14314), (1684, 11254), (2648, 7157), (3368, 5627)]