21722218

素因数分解:

$2^1\times 7^1\times {\mathrm{29}}^1\times {\mathrm{53503}}^1$

素因数の和:53541

約数の個数: 16

約数和(自身を含む): 38522880

約数和(自身を除く): 16800662

約数列:

[1, 2, 7, 14, 29, 58, 203, 406, 53503, 107006, 374521, 749042, 1551587, 3103174, 10861109, 21722218]

約数ペア:

[(1, 21722218), (2, 10861109), (7, 3103174), (14, 1551587), (29, 749042), (58, 374521), (203, 107006), (406, 53503)]