21399126

素因数分解:

$2^1\times 3^1\times 7^1\times {\mathrm{137}}^1\times {\mathrm{3719}}^1$

素因数の和:3868

約数の個数: 32

約数和(自身を含む): 49282560

約数和(自身を除く): 27883434

約数列:

[1, 2, 3, 6, 7, 14, 21, 42, 137, 274, 411, 822, 959, 1918, 2877, 3719, 5754, 7438, 11157, 22314, 26033, 52066, 78099, 156198, 509503, 1019006, 1528509, 3057018, 3566521, 7133042, 10699563, 21399126]

約数ペア:

[(1, 21399126), (2, 10699563), (3, 7133042), (6, 3566521), (7, 3057018), (14, 1528509), (21, 1019006), (42, 509503), (137, 156198), (274, 78099), (411, 52066), (822, 26033), (959, 22314), (1918, 11157), (2877, 7438), (3719, 5754)]