19938780

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{110771}}^1$

素因数の和:110786

約数の個数: 36

約数和(自身を含む): 60481512

約数和(自身を除く): 40542732

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 180, 110771, 221542, 332313, 443084, 553855, 664626, 996939, 1107710, 1329252, 1661565, 1993878, 2215420, 3323130, 3987756, 4984695, 6646260, 9969390, 19938780]

約数ペア:

[(1, 19938780), (2, 9969390), (3, 6646260), (4, 4984695), (5, 3987756), (6, 3323130), (9, 2215420), (10, 1993878), (12, 1661565), (15, 1329252), (18, 1107710), (20, 996939), (30, 664626), (36, 553855), (45, 443084), (60, 332313), (90, 221542), (180, 110771)]