221107580

素因数分解:

$2^2\times 5^1\times {\mathrm{11055379}}^1$

素因数の和:11055388

約数の個数: 12

約数和(自身を含む): 464325960

約数和(自身を除く): 243218380

約数列:

[1, 2, 4, 5, 10, 20, 11055379, 22110758, 44221516, 55276895, 110553790, 221107580]

約数ペア:

[(1, 221107580), (2, 110553790), (4, 55276895), (5, 44221516), (10, 22110758), (20, 11055379)]