21915940

素因数分解:

$2^2\times 5^1\times {\mathrm{461}}^1\times {\mathrm{2377}}^1$

素因数の和:2847

約数の個数: 24

約数和(自身を含む): 46142712

約数和(自身を除く): 24226772

約数列:

[1, 2, 4, 5, 10, 20, 461, 922, 1844, 2305, 2377, 4610, 4754, 9220, 9508, 11885, 23770, 47540, 1095797, 2191594, 4383188, 5478985, 10957970, 21915940]

約数ペア:

[(1, 21915940), (2, 10957970), (4, 5478985), (5, 4383188), (10, 2191594), (20, 1095797), (461, 47540), (922, 23770), (1844, 11885), (2305, 9508), (2377, 9220), (4610, 4754)]