21922020

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{121789}}^1$

素因数の和:121804

約数の個数: 36

約数和(自身を含む): 66497340

約数和(自身を除く): 44575320

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 180, 121789, 243578, 365367, 487156, 608945, 730734, 1096101, 1217890, 1461468, 1826835, 2192202, 2435780, 3653670, 4384404, 5480505, 7307340, 10961010, 21922020]

約数ペア:

[(1, 21922020), (2, 10961010), (3, 7307340), (4, 5480505), (5, 4384404), (6, 3653670), (9, 2435780), (10, 2192202), (12, 1826835), (15, 1461468), (18, 1217890), (20, 1096101), (30, 730734), (36, 608945), (45, 487156), (60, 365367), (90, 243578), (180, 121789)]