13218387

素因数分解:

$3^1\times 7^2\times {\mathrm{13}}^1\times {\mathrm{6917}}^1$

素因数の和:6947

約数の個数: 24

約数和(自身を含む): 22082256

約数和(自身を除く): 8863869

約数列:

[1, 3, 7, 13, 21, 39, 49, 91, 147, 273, 637, 1911, 6917, 20751, 48419, 89921, 145257, 269763, 338933, 629447, 1016799, 1888341, 4406129, 13218387]

約数ペア:

[(1, 13218387), (3, 4406129), (7, 1888341), (13, 1016799), (21, 629447), (39, 338933), (49, 269763), (91, 145257), (147, 89921), (273, 48419), (637, 20751), (1911, 6917)]