19990731458

素因数分解:

$2^1\times {\mathrm{71}}^1\times {\mathrm{2089}}^1\times {\mathrm{67391}}^1$

素因数の和:69553

約数の個数: 16

約数和(自身を含む): 30423444480

約数和(自身を除く): 10432713022

約数列:

[1, 2, 71, 142, 2089, 4178, 67391, 134782, 148319, 296638, 4784761, 9569522, 140779799, 281559598, 9995365729, 19990731458]

約数ペア:

[(1, 19990731458), (2, 9995365729), (71, 281559598), (142, 140779799), (2089, 9569522), (4178, 4784761), (67391, 296638), (134782, 148319)]