18991307305

素因数分解:

$5^1\times {\mathrm{79}}^1\times {\mathrm{241}}^1\times {\mathrm{199499}}^1$

素因数の和:199824

約数の個数: 16

約数和(自身を含む): 23173920000

約数和(自身を除く): 4182612695

約数列:

[1, 5, 79, 241, 395, 1205, 19039, 95195, 199499, 997495, 15760421, 48079259, 78802105, 240396295, 3798261461, 18991307305]

約数ペア:

[(1, 18991307305), (5, 3798261461), (79, 240396295), (241, 78802105), (395, 48079259), (1205, 15760421), (19039, 997495), (95195, 199499)]