31380975

素因数分解:

$3^2\times 5^2\times {\mathrm{211}}^1\times {\mathrm{661}}^1$

素因数の和:888

約数の個数: 36

約数和(自身を含む): 56558632

約数和(自身を除く): 25177657

約数列:

[1, 3, 5, 9, 15, 25, 45, 75, 211, 225, 633, 661, 1055, 1899, 1983, 3165, 3305, 5275, 5949, 9495, 9915, 15825, 16525, 29745, 47475, 49575, 139471, 148725, 418413, 697355, 1255239, 2092065, 3486775, 6276195, 10460325, 31380975]

約数ペア:

[(1, 31380975), (3, 10460325), (5, 6276195), (9, 3486775), (15, 2092065), (25, 1255239), (45, 697355), (75, 418413), (211, 148725), (225, 139471), (633, 49575), (661, 47475), (1055, 29745), (1899, 16525), (1983, 15825), (3165, 9915), (3305, 9495), (5275, 5949)]