18724225

素因数分解:

$5^2\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{3389}}^1$

素因数の和:3429

約数の個数: 24

約数和(自身を含む): 26482680

約数和(自身を除く): 7758455

約数列:

[1, 5, 13, 17, 25, 65, 85, 221, 325, 425, 1105, 3389, 5525, 16945, 44057, 57613, 84725, 220285, 288065, 748969, 1101425, 1440325, 3744845, 18724225]

約数ペア:

[(1, 18724225), (5, 3744845), (13, 1440325), (17, 1101425), (25, 748969), (65, 288065), (85, 220285), (221, 84725), (325, 57613), (425, 44057), (1105, 16945), (3389, 5525)]