18850325

素因数分解:

$5^2\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{1871}}^1$

素因数の和:1925

約数の個数: 24

約数和(自身を含む): 25998336

約数和(自身を除く): 7148011

約数列:

[1, 5, 13, 25, 31, 65, 155, 325, 403, 775, 1871, 2015, 9355, 10075, 24323, 46775, 58001, 121615, 290005, 608075, 754013, 1450025, 3770065, 18850325]

約数ペア:

[(1, 18850325), (5, 3770065), (13, 1450025), (25, 754013), (31, 608075), (65, 290005), (155, 121615), (325, 58001), (403, 46775), (775, 24323), (1871, 10075), (2015, 9355)]