21515204

素因数分解:

$2^2\times {\mathrm{37}}^2\times {\mathrm{3929}}^1$

素因数の和:4007

約数の個数: 18

約数和(自身を含む): 38706570

約数和(自身を除く): 17191366

約数列:

[1, 2, 4, 37, 74, 148, 1369, 2738, 3929, 5476, 7858, 15716, 145373, 290746, 581492, 5378801, 10757602, 21515204]

約数ペア:

[(1, 21515204), (2, 10757602), (4, 5378801), (37, 581492), (74, 290746), (148, 145373), (1369, 15716), (2738, 7858), (3929, 5476)]