90640175

素因数分解:

$5^2\times {\mathrm{17}}^1\times {\mathrm{419}}^1\times {\mathrm{509}}^1$

素因数の和:955

約数の個数: 24

約数和(自身を含む): 119523600

約数和(自身を除く): 28883425

約数列:

[1, 5, 17, 25, 85, 419, 425, 509, 2095, 2545, 7123, 8653, 10475, 12725, 35615, 43265, 178075, 213271, 216325, 1066355, 3625607, 5331775, 18128035, 90640175]

約数ペア:

[(1, 90640175), (5, 18128035), (17, 5331775), (25, 3625607), (85, 1066355), (419, 216325), (425, 213271), (509, 178075), (2095, 43265), (2545, 35615), (7123, 12725), (8653, 10475)]