78563620

素因数分解:

$2^2\times 5^1\times {\mathrm{461}}^1\times {\mathrm{8521}}^1$

素因数の和:8991

約数の個数: 24

約数和(自身を含む): 165360888

約数和(自身を除く): 86797268

約数列:

[1, 2, 4, 5, 10, 20, 461, 922, 1844, 2305, 4610, 8521, 9220, 17042, 34084, 42605, 85210, 170420, 3928181, 7856362, 15712724, 19640905, 39281810, 78563620]

約数ペア:

[(1, 78563620), (2, 39281810), (4, 19640905), (5, 15712724), (10, 7856362), (20, 3928181), (461, 170420), (922, 85210), (1844, 42605), (2305, 34084), (4610, 17042), (8521, 9220)]