20667585

素因数分解:

$3^1\times 5^1\times {\mathrm{79}}^1\times {\mathrm{107}}^1\times {\mathrm{163}}^1$

素因数の和:357

約数の個数: 32

約数和(自身を含む): 34007040

約数和(自身を除く): 13339455

約数列:

[1, 3, 5, 15, 79, 107, 163, 237, 321, 395, 489, 535, 815, 1185, 1605, 2445, 8453, 12877, 17441, 25359, 38631, 42265, 52323, 64385, 87205, 126795, 193155, 261615, 1377839, 4133517, 6889195, 20667585]

約数ペア:

[(1, 20667585), (3, 6889195), (5, 4133517), (15, 1377839), (79, 261615), (107, 193155), (163, 126795), (237, 87205), (321, 64385), (395, 52323), (489, 42265), (535, 38631), (815, 25359), (1185, 17441), (1605, 12877), (2445, 8453)]