18559280

素因数分解:

$2^4\times 5^1\times {\mathrm{139}}^1\times {\mathrm{1669}}^1$

素因数の和:1821

約数の個数: 40

約数和(自身を含む): 43486800

約数和(自身を除く): 24927520

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 139, 278, 556, 695, 1112, 1390, 1669, 2224, 2780, 3338, 5560, 6676, 8345, 11120, 13352, 16690, 26704, 33380, 66760, 133520, 231991, 463982, 927964, 1159955, 1855928, 2319910, 3711856, 4639820, 9279640, 18559280]

約数ペア:

[(1, 18559280), (2, 9279640), (4, 4639820), (5, 3711856), (8, 2319910), (10, 1855928), (16, 1159955), (20, 927964), (40, 463982), (80, 231991), (139, 133520), (278, 66760), (556, 33380), (695, 26704), (1112, 16690), (1390, 13352), (1669, 11120), (2224, 8345), (2780, 6676), (3338, 5560)]