31836440

素因数分解:

$2^3\times 5^1\times {\mathrm{491}}^1\times {\mathrm{1621}}^1$

素因数の和:2123

約数の個数: 32

約数和(自身を含む): 71822160

約数和(自身を除く): 39985720

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 491, 982, 1621, 1964, 2455, 3242, 3928, 4910, 6484, 8105, 9820, 12968, 16210, 19640, 32420, 64840, 795911, 1591822, 3183644, 3979555, 6367288, 7959110, 15918220, 31836440]

約数ペア:

[(1, 31836440), (2, 15918220), (4, 7959110), (5, 6367288), (8, 3979555), (10, 3183644), (20, 1591822), (40, 795911), (491, 64840), (982, 32420), (1621, 19640), (1964, 16210), (2455, 12968), (3242, 9820), (3928, 8105), (4910, 6484)]