21213904

素因数分解:

$2^4\times {\mathrm{941}}^1\times {\mathrm{1409}}^1$

素因数の和:2358

約数の個数: 20

約数和(自身を含む): 41174820

約数和(自身を除く): 19960916

約数列:

[1, 2, 4, 8, 16, 941, 1409, 1882, 2818, 3764, 5636, 7528, 11272, 15056, 22544, 1325869, 2651738, 5303476, 10606952, 21213904]

約数ペア:

[(1, 21213904), (2, 10606952), (4, 5303476), (8, 2651738), (16, 1325869), (941, 22544), (1409, 15056), (1882, 11272), (2818, 7528), (3764, 5636)]