1991193145

素因数分解:

$5^1\times {\mathrm{23}}^1\times {\mathrm{191}}^1\times {\mathrm{269}}^1\times {\mathrm{337}}^1$

素因数の和:825

約数の個数: 32

約数和(自身を含む): 2523156480

約数和(自身を除く): 531963335

約数列:

[1, 5, 23, 115, 191, 269, 337, 955, 1345, 1685, 4393, 6187, 7751, 21965, 30935, 38755, 51379, 64367, 90653, 256895, 321835, 453265, 1181717, 1480441, 2085019, 5908585, 7402205, 10425095, 17314723, 86573615, 398238629, 1991193145]

約数ペア:

[(1, 1991193145), (5, 398238629), (23, 86573615), (115, 17314723), (191, 10425095), (269, 7402205), (337, 5908585), (955, 2085019), (1345, 1480441), (1685, 1181717), (4393, 453265), (6187, 321835), (7751, 256895), (21965, 90653), (30935, 64367), (38755, 51379)]