20218555

素因数分解:

$5^1\times 7^1\times {\mathrm{149}}^1\times {\mathrm{3877}}^1$

素因数の和:4038

約数の個数: 16

約数和(自身を含む): 27921600

約数和(自身を除く): 7703045

約数列:

[1, 5, 7, 35, 149, 745, 1043, 3877, 5215, 19385, 27139, 135695, 577673, 2888365, 4043711, 20218555]

約数ペア:

[(1, 20218555), (5, 4043711), (7, 2888365), (35, 577673), (149, 135695), (745, 27139), (1043, 19385), (3877, 5215)]