221704889

素因数分解:

$7^1\times {\mathrm{23}}^1\times {\mathrm{79}}^1\times {\mathrm{17431}}^1$

素因数の和:17540

約数の個数: 16

約数和(自身を含む): 267755520

約数和(自身を除く): 46050631

約数列:

[1, 7, 23, 79, 161, 553, 1817, 12719, 17431, 122017, 400913, 1377049, 2806391, 9639343, 31672127, 221704889]

約数ペア:

[(1, 221704889), (7, 31672127), (23, 9639343), (79, 2806391), (161, 1377049), (553, 400913), (1817, 122017), (12719, 17431)]