18431995

素因数分解:

$5^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{101}}^1\times {\mathrm{113}}^1$

素因数の和:255

約数の個数: 32

約数和(自身を含む): 25116480

約数和(自身を除く): 6684485

約数列:

[1, 5, 17, 19, 85, 95, 101, 113, 323, 505, 565, 1615, 1717, 1919, 1921, 2147, 8585, 9595, 9605, 10735, 11413, 32623, 36499, 57065, 163115, 182495, 194021, 216847, 970105, 1084235, 3686399, 18431995]

約数ペア:

[(1, 18431995), (5, 3686399), (17, 1084235), (19, 970105), (85, 216847), (95, 194021), (101, 182495), (113, 163115), (323, 57065), (505, 36499), (565, 32623), (1615, 11413), (1717, 10735), (1919, 9605), (1921, 9595), (2147, 8585)]