21070520

素因数分解:

$2^3\times 5^1\times {\mathrm{526763}}^1$

素因数の和:526774

約数の個数: 16

約数和(自身を含む): 47408760

約数和(自身を除く): 26338240

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 526763, 1053526, 2107052, 2633815, 4214104, 5267630, 10535260, 21070520]

約数ペア:

[(1, 21070520), (2, 10535260), (4, 5267630), (5, 4214104), (8, 2633815), (10, 2107052), (20, 1053526), (40, 526763)]