21019502

素因数分解:

$2^1\times 7^1\times {\mathrm{61}}^1\times {\mathrm{151}}^1\times {\mathrm{163}}^1$

素因数の和:384

約数の個数: 32

約数和(自身を含む): 37092864

約数和(自身を除く): 16073362

約数列:

[1, 2, 7, 14, 61, 122, 151, 163, 302, 326, 427, 854, 1057, 1141, 2114, 2282, 9211, 9943, 18422, 19886, 24613, 49226, 64477, 69601, 128954, 139202, 172291, 344582, 1501393, 3002786, 10509751, 21019502]

約数ペア:

[(1, 21019502), (2, 10509751), (7, 3002786), (14, 1501393), (61, 344582), (122, 172291), (151, 139202), (163, 128954), (302, 69601), (326, 64477), (427, 49226), (854, 24613), (1057, 19886), (1141, 18422), (2114, 9943), (2282, 9211)]