19728742

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{61}}^2\times {\mathrm{241}}^1$

素因数の和:376

約数の個数: 24

約数和(自身を含む): 32957496

約数和(自身を除く): 13228754

約数列:

[1, 2, 11, 22, 61, 122, 241, 482, 671, 1342, 2651, 3721, 5302, 7442, 14701, 29402, 40931, 81862, 161711, 323422, 896761, 1793522, 9864371, 19728742]

約数ペア:

[(1, 19728742), (2, 9864371), (11, 1793522), (22, 896761), (61, 323422), (122, 161711), (241, 81862), (482, 40931), (671, 29402), (1342, 14701), (2651, 7442), (3721, 5302)]