128204380

素因数分解:

$2^2\times 5^1\times {\mathrm{239}}^1\times {\mathrm{26821}}^1$

素因数の和:27069

約数の個数: 24

約数和(自身を含む): 270365760

約数和(自身を除く): 142161380

約数列:

[1, 2, 4, 5, 10, 20, 239, 478, 956, 1195, 2390, 4780, 26821, 53642, 107284, 134105, 268210, 536420, 6410219, 12820438, 25640876, 32051095, 64102190, 128204380]

約数ペア:

[(1, 128204380), (2, 64102190), (4, 32051095), (5, 25640876), (10, 12820438), (20, 6410219), (239, 536420), (478, 268210), (956, 134105), (1195, 107284), (2390, 53642), (4780, 26821)]