19945197

素因数分解:

$3^5\times {\mathrm{211}}^1\times {\mathrm{389}}^1$

素因数の和:615

約数の個数: 24

約数和(自身を含む): 30095520

約数和(自身を除く): 10150323

約数列:

[1, 3, 9, 27, 81, 211, 243, 389, 633, 1167, 1899, 3501, 5697, 10503, 17091, 31509, 51273, 82079, 94527, 246237, 738711, 2216133, 6648399, 19945197]

約数ペア:

[(1, 19945197), (3, 6648399), (9, 2216133), (27, 738711), (81, 246237), (211, 94527), (243, 82079), (389, 51273), (633, 31509), (1167, 17091), (1899, 10503), (3501, 5697)]