20515775

素因数分解:

$5^2\times 7^1\times {\mathrm{59}}^1\times {\mathrm{1987}}^1$

素因数の和:2063

約数の個数: 24

約数和(自身を含む): 29581440

約数和(自身を除く): 9065665

約数列:

[1, 5, 7, 25, 35, 59, 175, 295, 413, 1475, 1987, 2065, 9935, 10325, 13909, 49675, 69545, 117233, 347725, 586165, 820631, 2930825, 4103155, 20515775]

約数ペア:

[(1, 20515775), (5, 4103155), (7, 2930825), (25, 820631), (35, 586165), (59, 347725), (175, 117233), (295, 69545), (413, 49675), (1475, 13909), (1987, 10325), (2065, 9935)]