156959420

素因数分解:

$2^2\times 5^1\times {\mathrm{401}}^1\times {\mathrm{19571}}^1$

素因数の和:19981

約数の個数: 24

約数和(自身を含む): 330453648

約数和(自身を除く): 173494228

約数列:

[1, 2, 4, 5, 10, 20, 401, 802, 1604, 2005, 4010, 8020, 19571, 39142, 78284, 97855, 195710, 391420, 7847971, 15695942, 31391884, 39239855, 78479710, 156959420]

約数ペア:

[(1, 156959420), (2, 78479710), (4, 39239855), (5, 31391884), (10, 15695942), (20, 7847971), (401, 391420), (802, 195710), (1604, 97855), (2005, 78284), (4010, 39142), (8020, 19571)]