21581696

素因数分解:

$2^7\times {\mathrm{139}}^1\times {\mathrm{1213}}^1$

素因数の和:1366

約数の個数: 32

約数和(自身を含む): 43339800

約数和(自身を除く): 21758104

約数列:

[1, 2, 4, 8, 16, 32, 64, 128, 139, 278, 556, 1112, 1213, 2224, 2426, 4448, 4852, 8896, 9704, 17792, 19408, 38816, 77632, 155264, 168607, 337214, 674428, 1348856, 2697712, 5395424, 10790848, 21581696]

約数ペア:

[(1, 21581696), (2, 10790848), (4, 5395424), (8, 2697712), (16, 1348856), (32, 674428), (64, 337214), (128, 168607), (139, 155264), (278, 77632), (556, 38816), (1112, 19408), (1213, 17792), (2224, 9704), (2426, 8896), (4448, 4852)]