43381640

素因数分解:

$2^3\times 5^1\times {\mathrm{821}}^1\times {\mathrm{1321}}^1$

素因数の和:2153

約数の個数: 32

約数和(自身を含む): 97801560

約数和(自身を除く): 54419920

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 821, 1321, 1642, 2642, 3284, 4105, 5284, 6568, 6605, 8210, 10568, 13210, 16420, 26420, 32840, 52840, 1084541, 2169082, 4338164, 5422705, 8676328, 10845410, 21690820, 43381640]

約数ペア:

[(1, 43381640), (2, 21690820), (4, 10845410), (5, 8676328), (8, 5422705), (10, 4338164), (20, 2169082), (40, 1084541), (821, 52840), (1321, 32840), (1642, 26420), (2642, 16420), (3284, 13210), (4105, 10568), (5284, 8210), (6568, 6605)]