21281370

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{64489}}^1$

素因数の和:64510

約数の個数: 32

約数和(自身を含む): 55719360

約数和(自身を除く): 34437990

約数列:

[1, 2, 3, 5, 6, 10, 11, 15, 22, 30, 33, 55, 66, 110, 165, 330, 64489, 128978, 193467, 322445, 386934, 644890, 709379, 967335, 1418758, 1934670, 2128137, 3546895, 4256274, 7093790, 10640685, 21281370]

約数ペア:

[(1, 21281370), (2, 10640685), (3, 7093790), (5, 4256274), (6, 3546895), (10, 2128137), (11, 1934670), (15, 1418758), (22, 967335), (30, 709379), (33, 644890), (55, 386934), (66, 322445), (110, 193467), (165, 128978), (330, 64489)]