19969873

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{223}}^1\times {\mathrm{1163}}^1$

素因数の和:1404

約数の個数: 16

約数和(自身を含む): 25030656

約数和(自身を除く): 5060783

約数列:

[1, 7, 11, 77, 223, 1163, 1561, 2453, 8141, 12793, 17171, 89551, 259349, 1815443, 2852839, 19969873]

約数ペア:

[(1, 19969873), (7, 2852839), (11, 1815443), (77, 259349), (223, 89551), (1163, 17171), (1561, 12793), (2453, 8141)]