81672940

素因数分解:

$2^2\times 5^1\times {\mathrm{491}}^1\times {\mathrm{8317}}^1$

素因数の和:8817

約数の個数: 24

約数和(自身を含む): 171883152

約数和(自身を除く): 90210212

約数列:

[1, 2, 4, 5, 10, 20, 491, 982, 1964, 2455, 4910, 8317, 9820, 16634, 33268, 41585, 83170, 166340, 4083647, 8167294, 16334588, 20418235, 40836470, 81672940]

約数ペア:

[(1, 81672940), (2, 40836470), (4, 20418235), (5, 16334588), (10, 8167294), (20, 4083647), (491, 166340), (982, 83170), (1964, 41585), (2455, 33268), (4910, 16634), (8317, 9820)]