18622225

素因数分解:

$5^2\times {\mathrm{17}}^1\times {\mathrm{43}}^1\times {\mathrm{1019}}^1$

素因数の和:1089

約数の個数: 24

約数和(自身を含む): 25043040

約数和(自身を除く): 6420815

約数列:

[1, 5, 17, 25, 43, 85, 215, 425, 731, 1019, 1075, 3655, 5095, 17323, 18275, 25475, 43817, 86615, 219085, 433075, 744889, 1095425, 3724445, 18622225]

約数ペア:

[(1, 18622225), (5, 3724445), (17, 1095425), (25, 744889), (43, 433075), (85, 219085), (215, 86615), (425, 43817), (731, 25475), (1019, 18275), (1075, 17323), (3655, 5095)]