19947780

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{110821}}^1$

素因数の和:110836

約数の個数: 36

約数和(自身を含む): 60508812

約数和(自身を除く): 40561032

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 180, 110821, 221642, 332463, 443284, 554105, 664926, 997389, 1108210, 1329852, 1662315, 1994778, 2216420, 3324630, 3989556, 4986945, 6649260, 9973890, 19947780]

約数ペア:

[(1, 19947780), (2, 9973890), (3, 6649260), (4, 4986945), (5, 3989556), (6, 3324630), (9, 2216420), (10, 1994778), (12, 1662315), (15, 1329852), (18, 1108210), (20, 997389), (30, 664926), (36, 554105), (45, 443284), (60, 332463), (90, 221642), (180, 110821)]