20120175

素因数分解:

$3^2\times 5^2\times {\mathrm{223}}^1\times {\mathrm{401}}^1$

素因数の和:640

約数の個数: 36

約数和(自身を含む): 36289344

約数和(自身を除く): 16169169

約数列:

[1, 3, 5, 9, 15, 25, 45, 75, 223, 225, 401, 669, 1115, 1203, 2005, 2007, 3345, 3609, 5575, 6015, 10025, 10035, 16725, 18045, 30075, 50175, 89423, 90225, 268269, 447115, 804807, 1341345, 2235575, 4024035, 6706725, 20120175]

約数ペア:

[(1, 20120175), (3, 6706725), (5, 4024035), (9, 2235575), (15, 1341345), (25, 804807), (45, 447115), (75, 268269), (223, 90225), (225, 89423), (401, 50175), (669, 30075), (1115, 18045), (1203, 16725), (2005, 10035), (2007, 10025), (3345, 6015), (3609, 5575)]