640332213

素因数分解:

$3^1\times {\mathrm{23}}^1\times {\mathrm{557}}^1\times {\mathrm{16661}}^1$

素因数の和:17244

約数の個数: 16

約数和(自身を含む): 892550016

約数和(自身を除く): 252217803

約数列:

[1, 3, 23, 69, 557, 1671, 12811, 16661, 38433, 49983, 383203, 1149609, 9280177, 27840531, 213444071, 640332213]

約数ペア:

[(1, 640332213), (3, 213444071), (23, 27840531), (69, 9280177), (557, 1149609), (1671, 383203), (12811, 49983), (16661, 38433)]