20152280

素因数分解:

$2^3\times 5^1\times {\mathrm{521}}^1\times {\mathrm{967}}^1$

素因数の和:1499

約数の個数: 32

約数和(自身を含む): 45476640

約数和(自身を除く): 25324360

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 521, 967, 1042, 1934, 2084, 2605, 3868, 4168, 4835, 5210, 7736, 9670, 10420, 19340, 20840, 38680, 503807, 1007614, 2015228, 2519035, 4030456, 5038070, 10076140, 20152280]

約数ペア:

[(1, 20152280), (2, 10076140), (4, 5038070), (5, 4030456), (8, 2519035), (10, 2015228), (20, 1007614), (40, 503807), (521, 38680), (967, 20840), (1042, 19340), (1934, 10420), (2084, 9670), (2605, 7736), (3868, 5210), (4168, 4835)]