21391976

素因数分解:

$2^3\times {\mathrm{821}}^1\times {\mathrm{3257}}^1$

素因数の和:4084

約数の個数: 16

約数和(自身を含む): 40171140

約数和(自身を除く): 18779164

約数列:

[1, 2, 4, 8, 821, 1642, 3257, 3284, 6514, 6568, 13028, 26056, 2673997, 5347994, 10695988, 21391976]

約数ペア:

[(1, 21391976), (2, 10695988), (4, 5347994), (8, 2673997), (821, 26056), (1642, 13028), (3257, 6568), (3284, 6514)]