19987740

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{111043}}^1$

素因数の和:111058

約数の個数: 36

約数和(自身を含む): 60630024

約数和(自身を除く): 40642284

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 180, 111043, 222086, 333129, 444172, 555215, 666258, 999387, 1110430, 1332516, 1665645, 1998774, 2220860, 3331290, 3997548, 4996935, 6662580, 9993870, 19987740]

約数ペア:

[(1, 19987740), (2, 9993870), (3, 6662580), (4, 4996935), (5, 3997548), (6, 3331290), (9, 2220860), (10, 1998774), (12, 1665645), (15, 1332516), (18, 1110430), (20, 999387), (30, 666258), (36, 555215), (45, 444172), (60, 333129), (90, 222086), (180, 111043)]