201691780

素因数分解:

$2^2\times 5^1\times {\mathrm{139}}^1\times {\mathrm{72551}}^1$

素因数の和:72699

約数の個数: 24

約数和(自身を含む): 426605760

約数和(自身を除く): 224913980

約数列:

[1, 2, 4, 5, 10, 20, 139, 278, 556, 695, 1390, 2780, 72551, 145102, 290204, 362755, 725510, 1451020, 10084589, 20169178, 40338356, 50422945, 100845890, 201691780]

約数ペア:

[(1, 201691780), (2, 100845890), (4, 50422945), (5, 40338356), (10, 20169178), (20, 10084589), (139, 1451020), (278, 725510), (556, 362755), (695, 290204), (1390, 145102), (2780, 72551)]