20175025

素因数分解:

$5^2\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{2699}}^1$

素因数の和:2745

約数の個数: 24

約数和(自身を含む): 28123200

約数和(自身を除く): 7948175

約数列:

[1, 5, 13, 23, 25, 65, 115, 299, 325, 575, 1495, 2699, 7475, 13495, 35087, 62077, 67475, 175435, 310385, 807001, 877175, 1551925, 4035005, 20175025]

約数ペア:

[(1, 20175025), (5, 4035005), (13, 1551925), (23, 877175), (25, 807001), (65, 310385), (115, 175435), (299, 67475), (325, 62077), (575, 35087), (1495, 13495), (2699, 7475)]