209888680

素因数分解:

$2^3\times 5^1\times {\mathrm{5247217}}^1$

素因数の和:5247228

約数の個数: 16

約数和(自身を含む): 472249620

約数和(自身を除く): 262360940

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 5247217, 10494434, 20988868, 26236085, 41977736, 52472170, 104944340, 209888680]

約数ペア:

[(1, 209888680), (2, 104944340), (4, 52472170), (5, 41977736), (8, 26236085), (10, 20988868), (20, 10494434), (40, 5247217)]