21255845

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{349}}^1\times {\mathrm{937}}^1$

素因数の和:1304

約数の個数: 16

約数和(自身を含む): 27577200

約数和(自身を除く): 6321355

約数列:

[1, 5, 13, 65, 349, 937, 1745, 4537, 4685, 12181, 22685, 60905, 327013, 1635065, 4251169, 21255845]

約数ペア:

[(1, 21255845), (5, 4251169), (13, 1635065), (65, 327013), (349, 60905), (937, 22685), (1745, 12181), (4537, 4685)]