21854714

素因数分解:

$2^1\times 7^1\times {\mathrm{61}}^1\times {\mathrm{157}}^1\times {\mathrm{163}}^1$

素因数の和:390

約数の個数: 32

約数和(自身を含む): 38557056

約数和(自身を除く): 16702342

約数列:

[1, 2, 7, 14, 61, 122, 157, 163, 314, 326, 427, 854, 1099, 1141, 2198, 2282, 9577, 9943, 19154, 19886, 25591, 51182, 67039, 69601, 134078, 139202, 179137, 358274, 1561051, 3122102, 10927357, 21854714]

約数ペア:

[(1, 21854714), (2, 10927357), (7, 3122102), (14, 1561051), (61, 358274), (122, 179137), (157, 139202), (163, 134078), (314, 69601), (326, 67039), (427, 51182), (854, 25591), (1099, 19886), (1141, 19154), (2198, 9943), (2282, 9577)]