21238000020

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{117988889}}^1$

素因数の和:117988904

約数の個数: 36

約数和(自身を含む): 64421933940

約数和(自身を除く): 43183933920

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 180, 117988889, 235977778, 353966667, 471955556, 589944445, 707933334, 1061900001, 1179888890, 1415866668, 1769833335, 2123800002, 2359777780, 3539666670, 4247600004, 5309500005, 7079333340, 10619000010, 21238000020]

約数ペア:

[(1, 21238000020), (2, 10619000010), (3, 7079333340), (4, 5309500005), (5, 4247600004), (6, 3539666670), (9, 2359777780), (10, 2123800002), (12, 1769833335), (15, 1415866668), (18, 1179888890), (20, 1061900001), (30, 707933334), (36, 589944445), (45, 471955556), (60, 353966667), (90, 235977778), (180, 117988889)]