18738275

素因数分解:

$5^2\times {\mathrm{19}}^1\times {\mathrm{103}}^1\times {\mathrm{383}}^1$

素因数の和:515

約数の個数: 24

約数和(自身を含む): 24760320

約数和(自身を除く): 6022045

約数列:

[1, 5, 19, 25, 95, 103, 383, 475, 515, 1915, 1957, 2575, 7277, 9575, 9785, 36385, 39449, 48925, 181925, 197245, 749531, 986225, 3747655, 18738275]

約数ペア:

[(1, 18738275), (5, 3747655), (19, 986225), (25, 749531), (95, 197245), (103, 181925), (383, 48925), (475, 39449), (515, 36385), (1915, 9785), (1957, 9575), (2575, 7277)]