21816910

素因数分解:

$2^1\times 5^1\times {\mathrm{43}}^1\times {\mathrm{113}}^1\times {\mathrm{449}}^1$

素因数の和:612

約数の個数: 32

約数和(自身を含む): 40629600

約数和(自身を除く): 18812690

約数列:

[1, 2, 5, 10, 43, 86, 113, 215, 226, 430, 449, 565, 898, 1130, 2245, 4490, 4859, 9718, 19307, 24295, 38614, 48590, 50737, 96535, 101474, 193070, 253685, 507370, 2181691, 4363382, 10908455, 21816910]

約数ペア:

[(1, 21816910), (2, 10908455), (5, 4363382), (10, 2181691), (43, 507370), (86, 253685), (113, 193070), (215, 101474), (226, 96535), (430, 50737), (449, 48590), (565, 38614), (898, 24295), (1130, 19307), (2245, 9718), (4490, 4859)]