18947305

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{6779}}^1$

素因数の和:6840

約数の個数: 16

約数和(自身を含む): 25058880

約数和(自身を除く): 6111575

約数列:

[1, 5, 13, 43, 65, 215, 559, 2795, 6779, 33895, 88127, 291497, 440635, 1457485, 3789461, 18947305]

約数ペア:

[(1, 18947305), (5, 3789461), (13, 1457485), (43, 440635), (65, 291497), (215, 88127), (559, 33895), (2795, 6779)]