80639876

素因数分解:

$2^2\times {\mathrm{19}}^1\times {\mathrm{491}}^1\times {\mathrm{2161}}^1$

素因数の和:2675

約数の個数: 24

約数和(自身を含む): 148918560

約数和(自身を除く): 68278684

約数列:

[1, 2, 4, 19, 38, 76, 491, 982, 1964, 2161, 4322, 8644, 9329, 18658, 37316, 41059, 82118, 164236, 1061051, 2122102, 4244204, 20159969, 40319938, 80639876]

約数ペア:

[(1, 80639876), (2, 40319938), (4, 20159969), (19, 4244204), (38, 2122102), (76, 1061051), (491, 164236), (982, 82118), (1964, 41059), (2161, 37316), (4322, 18658), (8644, 9329)]