72812780

素因数分解:

$2^2\times 5^1\times {\mathrm{1171}}^1\times {\mathrm{3109}}^1$

素因数の和:4289

約数の個数: 24

約数和(自身を含む): 153086640

約数和(自身を除く): 80273860

約数列:

[1, 2, 4, 5, 10, 20, 1171, 2342, 3109, 4684, 5855, 6218, 11710, 12436, 15545, 23420, 31090, 62180, 3640639, 7281278, 14562556, 18203195, 36406390, 72812780]

約数ペア:

[(1, 72812780), (2, 36406390), (4, 18203195), (5, 14562556), (10, 7281278), (20, 3640639), (1171, 62180), (2342, 31090), (3109, 23420), (4684, 15545), (5855, 12436), (6218, 11710)]