20420098

素因数分解:

$2^1\times {\mathrm{19}}^1\times {\mathrm{43}}^1\times {\mathrm{12497}}^1$

素因数の和:12561

約数の個数: 16

約数和(自身を含む): 32994720

約数和(自身を除く): 12574622

約数列:

[1, 2, 19, 38, 43, 86, 817, 1634, 12497, 24994, 237443, 474886, 537371, 1074742, 10210049, 20420098]

約数ペア:

[(1, 20420098), (2, 10210049), (19, 1074742), (38, 537371), (43, 474886), (86, 237443), (817, 24994), (1634, 12497)]