19998540

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{111103}}^1$

素因数の和:111118

約数の個数: 36

約数和(自身を含む): 60662784

約数和(自身を除く): 40664244

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 180, 111103, 222206, 333309, 444412, 555515, 666618, 999927, 1111030, 1333236, 1666545, 1999854, 2222060, 3333090, 3999708, 4999635, 6666180, 9999270, 19998540]

約数ペア:

[(1, 19998540), (2, 9999270), (3, 6666180), (4, 4999635), (5, 3999708), (6, 3333090), (9, 2222060), (10, 1999854), (12, 1666545), (15, 1333236), (18, 1111030), (20, 999927), (30, 666618), (36, 555515), (45, 444412), (60, 333309), (90, 222206), (180, 111103)]