19618963

素因数分解:

$7^2\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{1621}}^1$

素因数の和:1667

約数の個数: 24

約数和(自身を含む): 25887120

約数和(自身を除く): 6268157

約数列:

[1, 7, 13, 19, 49, 91, 133, 247, 637, 931, 1621, 1729, 11347, 12103, 21073, 30799, 79429, 147511, 215593, 400387, 1032577, 1509151, 2802709, 19618963]

約数ペア:

[(1, 19618963), (7, 2802709), (13, 1509151), (19, 1032577), (49, 400387), (91, 215593), (133, 147511), (247, 79429), (637, 30799), (931, 21073), (1621, 12103), (1729, 11347)]