12880625

素因数分解:

$5^4\times {\mathrm{37}}^1\times {\mathrm{557}}^1$

素因数の和:614

約数の個数: 20

約数和(自身を含む): 16560324

約数和(自身を除く): 3679699

約数列:

[1, 5, 25, 37, 125, 185, 557, 625, 925, 2785, 4625, 13925, 20609, 23125, 69625, 103045, 348125, 515225, 2576125, 12880625]

約数ペア:

[(1, 12880625), (5, 2576125), (25, 515225), (37, 348125), (125, 103045), (185, 69625), (557, 23125), (625, 20609), (925, 13925), (2785, 4625)]