20349147

素因数分解:

$3^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{131}}^1\times {\mathrm{569}}^1$

素因数の和:723

約数の個数: 32

約数和(自身を含む): 33707520

約数和(自身を除く): 13358373

約数列:

[1, 3, 7, 13, 21, 39, 91, 131, 273, 393, 569, 917, 1703, 1707, 2751, 3983, 5109, 7397, 11921, 11949, 22191, 35763, 51779, 74539, 155337, 223617, 521773, 969007, 1565319, 2907021, 6783049, 20349147]

約数ペア:

[(1, 20349147), (3, 6783049), (7, 2907021), (13, 1565319), (21, 969007), (39, 521773), (91, 223617), (131, 155337), (273, 74539), (393, 51779), (569, 35763), (917, 22191), (1703, 11949), (1707, 11921), (2751, 7397), (3983, 5109)]