1330581640

素因数分解:

$2^3\times 5^1\times {\mathrm{1621}}^1\times {\mathrm{20521}}^1$

素因数の和:22153

約数の個数: 32

約数和(自身を含む): 2995801560

約数和(自身を除く): 1665219920

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 1621, 3242, 6484, 8105, 12968, 16210, 20521, 32420, 41042, 64840, 82084, 102605, 164168, 205210, 410420, 820840, 33264541, 66529082, 133058164, 166322705, 266116328, 332645410, 665290820, 1330581640]

約数ペア:

[(1, 1330581640), (2, 665290820), (4, 332645410), (5, 266116328), (8, 166322705), (10, 133058164), (20, 66529082), (40, 33264541), (1621, 820840), (3242, 410420), (6484, 205210), (8105, 164168), (12968, 102605), (16210, 82084), (20521, 64840), (32420, 41042)]