20561488

素因数分解:

$2^4\times {\mathrm{79}}^1\times {\mathrm{16267}}^1$

素因数の和:16354

約数の個数: 20

約数和(自身を含む): 40344640

約数和(自身を除く): 19783152

約数列:

[1, 2, 4, 8, 16, 79, 158, 316, 632, 1264, 16267, 32534, 65068, 130136, 260272, 1285093, 2570186, 5140372, 10280744, 20561488]

約数ペア:

[(1, 20561488), (2, 10280744), (4, 5140372), (8, 2570186), (16, 1285093), (79, 260272), (158, 130136), (316, 65068), (632, 32534), (1264, 16267)]