20305075

素因数分解:

$5^2\times 7^1\times {\mathrm{29}}^1\times {\mathrm{4001}}^1$

素因数の和:4047

約数の個数: 24

約数和(自身を含む): 29774880

約数和(自身を除く): 9469805

約数列:

[1, 5, 7, 25, 29, 35, 145, 175, 203, 725, 1015, 4001, 5075, 20005, 28007, 100025, 116029, 140035, 580145, 700175, 812203, 2900725, 4061015, 20305075]

約数ペア:

[(1, 20305075), (5, 4061015), (7, 2900725), (25, 812203), (29, 700175), (35, 580145), (145, 140035), (175, 116029), (203, 100025), (725, 28007), (1015, 20005), (4001, 5075)]