12220355

素因数分解:

$5^1\times 7^2\times {\mathrm{31}}^1\times {\mathrm{1609}}^1$

素因数の和:1659

約数の個数: 24

約数和(自身を含む): 17619840

約数和(自身を除く): 5399485

約数列:

[1, 5, 7, 31, 35, 49, 155, 217, 245, 1085, 1519, 1609, 7595, 8045, 11263, 49879, 56315, 78841, 249395, 349153, 394205, 1745765, 2444071, 12220355]

約数ペア:

[(1, 12220355), (5, 2444071), (7, 1745765), (31, 394205), (35, 349153), (49, 249395), (155, 78841), (217, 56315), (245, 49879), (1085, 11263), (1519, 8045), (1609, 7595)]