81400575

素因数分解:

$3^1\times 5^2\times {\mathrm{31}}^1\times {\mathrm{157}}^1\times {\mathrm{223}}^1$

素因数の和:424

約数の個数: 48

約数和(自身を含む): 140435456

約数和(自身を除く): 59034881

約数列:

[1, 3, 5, 15, 25, 31, 75, 93, 155, 157, 223, 465, 471, 669, 775, 785, 1115, 2325, 2355, 3345, 3925, 4867, 5575, 6913, 11775, 14601, 16725, 20739, 24335, 34565, 35011, 73005, 103695, 105033, 121675, 172825, 175055, 365025, 518475, 525165, 875275, 1085341, 2625825, 3256023, 5426705, 16280115, 27133525, 81400575]

約数ペア:

[(1, 81400575), (3, 27133525), (5, 16280115), (15, 5426705), (25, 3256023), (31, 2625825), (75, 1085341), (93, 875275), (155, 525165), (157, 518475), (223, 365025), (465, 175055), (471, 172825), (669, 121675), (775, 105033), (785, 103695), (1115, 73005), (2325, 35011), (2355, 34565), (3345, 24335), (3925, 20739), (4867, 16725), (5575, 14601), (6913, 11775)]