72001996

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{409}}^1\times {\mathrm{4001}}^1$

素因数の和:4425

約数の個数: 24

約数和(自身を含む): 137828880

約数和(自身を除く): 65826884

約数列:

[1, 2, 4, 11, 22, 44, 409, 818, 1636, 4001, 4499, 8002, 8998, 16004, 17996, 44011, 88022, 176044, 1636409, 3272818, 6545636, 18000499, 36000998, 72001996]

約数ペア:

[(1, 72001996), (2, 36000998), (4, 18000499), (11, 6545636), (22, 3272818), (44, 1636409), (409, 176044), (818, 88022), (1636, 44011), (4001, 17996), (4499, 16004), (8002, 8998)]