21399754

素因数分解:

$2^1\times {\mathrm{127}}^1\times {\mathrm{173}}^1\times {\mathrm{487}}^1$

素因数の和:789

約数の個数: 16

約数和(自身を含む): 32606208

約数和(自身を除く): 11206454

約数列:

[1, 2, 127, 173, 254, 346, 487, 974, 21971, 43942, 61849, 84251, 123698, 168502, 10699877, 21399754]

約数ペア:

[(1, 21399754), (2, 10699877), (127, 168502), (173, 123698), (254, 84251), (346, 61849), (487, 43942), (974, 21971)]