21130020

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{117389}}^1$

素因数の和:117404

約数の個数: 36

約数和(自身を含む): 64094940

約数和(自身を除く): 42964920

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 180, 117389, 234778, 352167, 469556, 586945, 704334, 1056501, 1173890, 1408668, 1760835, 2113002, 2347780, 3521670, 4226004, 5282505, 7043340, 10565010, 21130020]

約数ペア:

[(1, 21130020), (2, 10565010), (3, 7043340), (4, 5282505), (5, 4226004), (6, 3521670), (9, 2347780), (10, 2113002), (12, 1760835), (15, 1408668), (18, 1173890), (20, 1056501), (30, 704334), (36, 586945), (45, 469556), (60, 352167), (90, 234778), (180, 117389)]