217967420

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{990761}}^1$

素因数の和:990781

約数の個数: 24

約数和(自身を含む): 499344048

約数和(自身を除く): 281376628

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 220, 990761, 1981522, 3963044, 4953805, 9907610, 10898371, 19815220, 21796742, 43593484, 54491855, 108983710, 217967420]

約数ペア:

[(1, 217967420), (2, 108983710), (4, 54491855), (5, 43593484), (10, 21796742), (11, 19815220), (20, 10898371), (22, 9907610), (44, 4953805), (55, 3963044), (110, 1981522), (220, 990761)]