21221516

素因数分解:

$2^2\times {\mathrm{89}}^1\times {\mathrm{59611}}^1$

素因数の和:59704

約数の個数: 12

約数和(自身を含む): 37555560

約数和(自身を除く): 16334044

約数列:

[1, 2, 4, 89, 178, 356, 59611, 119222, 238444, 5305379, 10610758, 21221516]

約数ペア:

[(1, 21221516), (2, 10610758), (4, 5305379), (89, 238444), (178, 119222), (356, 59611)]