20386925

素因数分解:

$5^2\times {\mathrm{13}}^1\times {\mathrm{149}}^1\times {\mathrm{421}}^1$

素因数の和:593

約数の個数: 24

約数和(自身を含む): 27472200

約数和(自身を除く): 7085275

約数列:

[1, 5, 13, 25, 65, 149, 325, 421, 745, 1937, 2105, 3725, 5473, 9685, 10525, 27365, 48425, 62729, 136825, 313645, 815477, 1568225, 4077385, 20386925]

約数ペア:

[(1, 20386925), (5, 4077385), (13, 1568225), (25, 815477), (65, 313645), (149, 136825), (325, 62729), (421, 48425), (745, 27365), (1937, 10525), (2105, 9685), (3725, 5473)]