261687730

素因数分解:

$2^1\times 5^1\times {\mathrm{6521}}^1\times {\mathrm{4013}}^1$

素因数の和:10541

約数の個数: 16

約数和(自身を含む): 471227544

約数和(自身を除く): 209539814

約数列:

[1, 2, 5, 10, 4013, 6521, 8026, 13042, 20065, 32605, 40130, 65210, 26168773, 52337546, 130843865, 261687730]

約数ペア:

[(1, 261687730), (2, 130843865), (5, 52337546), (10, 26168773), (4013, 65210), (6521, 40130), (8026, 32605), (13042, 20065)]