21989530

素因数分解:

$2^1\times 5^1\times {\mathrm{41}}^1\times {\mathrm{53633}}^1$

素因数の和:53681

約数の個数: 16

約数和(自身を含む): 40547304

約数和(自身を除く): 18557774

約数列:

[1, 2, 5, 10, 41, 82, 205, 410, 53633, 107266, 268165, 536330, 2198953, 4397906, 10994765, 21989530]

約数ペア:

[(1, 21989530), (2, 10994765), (5, 4397906), (10, 2198953), (41, 536330), (82, 268165), (205, 107266), (410, 53633)]