18702125

素因数分解:

$5^3\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{677}}^1$

素因数の和:722

約数の個数: 32

約数和(自身を含む): 26653536

約数和(自身を除く): 7951411

約数列:

[1, 5, 13, 17, 25, 65, 85, 125, 221, 325, 425, 677, 1105, 1625, 2125, 3385, 5525, 8801, 11509, 16925, 27625, 44005, 57545, 84625, 149617, 220025, 287725, 748085, 1100125, 1438625, 3740425, 18702125]

約数ペア:

[(1, 18702125), (5, 3740425), (13, 1438625), (17, 1100125), (25, 748085), (65, 287725), (85, 220025), (125, 149617), (221, 84625), (325, 57545), (425, 44005), (677, 27625), (1105, 16925), (1625, 11509), (2125, 8801), (3385, 5525)]