20387705

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{83}}^1\times {\mathrm{3779}}^1$

素因数の和:3880

約数の個数: 16

約数和(自身を含む): 26671680

約数和(自身を除く): 6283975

約数列:

[1, 5, 13, 65, 83, 415, 1079, 3779, 5395, 18895, 49127, 245635, 313657, 1568285, 4077541, 20387705]

約数ペア:

[(1, 20387705), (5, 4077541), (13, 1568285), (65, 313657), (83, 245635), (415, 49127), (1079, 18895), (3779, 5395)]