18864275

素因数分解:

$5^2\times {\mathrm{31}}^1\times {\mathrm{101}}^1\times {\mathrm{241}}^1$

素因数の和:383

約数の個数: 24

約数和(自身を含む): 24486528

約数和(自身を除く): 5622253

約数列:

[1, 5, 25, 31, 101, 155, 241, 505, 775, 1205, 2525, 3131, 6025, 7471, 15655, 24341, 37355, 78275, 121705, 186775, 608525, 754571, 3772855, 18864275]

約数ペア:

[(1, 18864275), (5, 3772855), (25, 754571), (31, 608525), (101, 186775), (155, 121705), (241, 78275), (505, 37355), (775, 24341), (1205, 15655), (2525, 7471), (3131, 6025)]