21870558

素因数分解:

$2^1\times 3^2\times {\mathrm{19}}^1\times {\mathrm{63949}}^1$

素因数の和:63976

約数の個数: 24

約数和(自身を含む): 49881000

約数和(自身を除く): 28010442

約数列:

[1, 2, 3, 6, 9, 18, 19, 38, 57, 114, 171, 342, 63949, 127898, 191847, 383694, 575541, 1151082, 1215031, 2430062, 3645093, 7290186, 10935279, 21870558]

約数ペア:

[(1, 21870558), (2, 10935279), (3, 7290186), (6, 3645093), (9, 2430062), (18, 1215031), (19, 1151082), (38, 575541), (57, 383694), (114, 191847), (171, 127898), (342, 63949)]