12878817

素因数分解:

$3^1\times 7^2\times {\mathrm{79}}^1\times {\mathrm{1109}}^1$

素因数の和:1205

約数の個数: 24

約数和(自身を含む): 20246400

約数和(自身を除く): 7367583

約数列:

[1, 3, 7, 21, 49, 79, 147, 237, 553, 1109, 1659, 3327, 3871, 7763, 11613, 23289, 54341, 87611, 163023, 262833, 613277, 1839831, 4292939, 12878817]

約数ペア:

[(1, 12878817), (3, 4292939), (7, 1839831), (21, 613277), (49, 262833), (79, 163023), (147, 87611), (237, 54341), (553, 23289), (1109, 11613), (1659, 7763), (3327, 3871)]