18127525

素因数分解:

$5^2\times {\mathrm{13}}^1\times {\mathrm{17}}^2\times {\mathrm{193}}^1$

素因数の和:250

約数の個数: 36

約数和(自身を含む): 25848172

約数和(自身を除く): 7720647

約数列:

[1, 5, 13, 17, 25, 65, 85, 193, 221, 289, 325, 425, 965, 1105, 1445, 2509, 3281, 3757, 4825, 5525, 7225, 12545, 16405, 18785, 42653, 55777, 62725, 82025, 93925, 213265, 278885, 725101, 1066325, 1394425, 3625505, 18127525]

約数ペア:

[(1, 18127525), (5, 3625505), (13, 1394425), (17, 1066325), (25, 725101), (65, 278885), (85, 213265), (193, 93925), (221, 82025), (289, 62725), (325, 55777), (425, 42653), (965, 18785), (1105, 16405), (1445, 12545), (2509, 7225), (3281, 5525), (3757, 4825)]