18780508

素因数分解:

$2^2\times {\mathrm{43}}^1\times {\mathrm{137}}^1\times {\mathrm{797}}^1$

素因数の和:981

約数の個数: 24

約数和(自身を含む): 33918192

約数和(自身を除く): 15137684

約数列:

[1, 2, 4, 43, 86, 137, 172, 274, 548, 797, 1594, 3188, 5891, 11782, 23564, 34271, 68542, 109189, 137084, 218378, 436756, 4695127, 9390254, 18780508]

約数ペア:

[(1, 18780508), (2, 9390254), (4, 4695127), (43, 436756), (86, 218378), (137, 137084), (172, 109189), (274, 68542), (548, 34271), (797, 23564), (1594, 11782), (3188, 5891)]