20678645

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{79}}^1\times {\mathrm{4027}}^1$

素因数の和:4124

約数の個数: 16

約数和(自身を含む): 27068160

約数和(自身を除く): 6389515

約数列:

[1, 5, 13, 65, 79, 395, 1027, 4027, 5135, 20135, 52351, 261755, 318133, 1590665, 4135729, 20678645]

約数ペア:

[(1, 20678645), (5, 4135729), (13, 1590665), (65, 318133), (79, 261755), (395, 52351), (1027, 20135), (4027, 5135)]