201871420

素因数分解:

$2^2\times 5^1\times {\mathrm{401}}^1\times {\mathrm{25171}}^1$

素因数の和:25581

約数の個数: 24

約数和(自身を含む): 425004048

約数和(自身を除く): 223132628

約数列:

[1, 2, 4, 5, 10, 20, 401, 802, 1604, 2005, 4010, 8020, 25171, 50342, 100684, 125855, 251710, 503420, 10093571, 20187142, 40374284, 50467855, 100935710, 201871420]

約数ペア:

[(1, 201871420), (2, 100935710), (4, 50467855), (5, 40374284), (10, 20187142), (20, 10093571), (401, 503420), (802, 251710), (1604, 125855), (2005, 100684), (4010, 50342), (8020, 25171)]