30580

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{139}}^1$

素因数の和:159

約数の個数: 24

約数和(自身を含む): 70560

約数和(自身を除く): 39980

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 139, 220, 278, 556, 695, 1390, 1529, 2780, 3058, 6116, 7645, 15290, 30580]

約数ペア:

[(1, 30580), (2, 15290), (4, 7645), (5, 6116), (10, 3058), (11, 2780), (20, 1529), (22, 1390), (44, 695), (55, 556), (110, 278), (139, 220)]