12781980

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{71011}}^1$

素因数の和:71026

約数の個数: 36

約数和(自身を含む): 38772552

約数和(自身を除く): 25990572

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 180, 71011, 142022, 213033, 284044, 355055, 426066, 639099, 710110, 852132, 1065165, 1278198, 1420220, 2130330, 2556396, 3195495, 4260660, 6390990, 12781980]

約数ペア:

[(1, 12781980), (2, 6390990), (3, 4260660), (4, 3195495), (5, 2556396), (6, 2130330), (9, 1420220), (10, 1278198), (12, 1065165), (15, 852132), (18, 710110), (20, 639099), (30, 426066), (36, 355055), (45, 284044), (60, 213033), (90, 142022), (180, 71011)]