13221128

素因数分解:

$2^3\times {\mathrm{31}}^1\times {\mathrm{89}}^1\times {\mathrm{599}}^1$

素因数の和:725

約数の個数: 32

約数和(自身を含む): 25920000

約数和(自身を除く): 12698872

約数列:

[1, 2, 4, 8, 31, 62, 89, 124, 178, 248, 356, 599, 712, 1198, 2396, 2759, 4792, 5518, 11036, 18569, 22072, 37138, 53311, 74276, 106622, 148552, 213244, 426488, 1652641, 3305282, 6610564, 13221128]

約数ペア:

[(1, 13221128), (2, 6610564), (4, 3305282), (8, 1652641), (31, 426488), (62, 213244), (89, 148552), (124, 106622), (178, 74276), (248, 53311), (356, 37138), (599, 22072), (712, 18569), (1198, 11036), (2396, 5518), (2759, 4792)]