12507220

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{139}}^1\times {\mathrm{409}}^1$

素因数の和:568

約数の個数: 48

約数和(自身を含む): 28929600

約数和(自身を除く): 16422380

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 139, 220, 278, 409, 556, 695, 818, 1390, 1529, 1636, 2045, 2780, 3058, 4090, 4499, 6116, 7645, 8180, 8998, 15290, 17996, 22495, 30580, 44990, 56851, 89980, 113702, 227404, 284255, 568510, 625361, 1137020, 1250722, 2501444, 3126805, 6253610, 12507220]

約数ペア:

[(1, 12507220), (2, 6253610), (4, 3126805), (5, 2501444), (10, 1250722), (11, 1137020), (20, 625361), (22, 568510), (44, 284255), (55, 227404), (110, 113702), (139, 89980), (220, 56851), (278, 44990), (409, 30580), (556, 22495), (695, 17996), (818, 15290), (1390, 8998), (1529, 8180), (1636, 7645), (2045, 6116), (2780, 4499), (3058, 4090)]