20796009

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{103}}^1\times {\mathrm{167}}^1$

素因数の和:317

約数の個数: 32

約数和(自身を含む): 31309824

約数和(自身を除く): 10513815

約数列:

[1, 3, 13, 31, 39, 93, 103, 167, 309, 403, 501, 1209, 1339, 2171, 3193, 4017, 5177, 6513, 9579, 15531, 17201, 41509, 51603, 67301, 124527, 201903, 223613, 533231, 670839, 1599693, 6932003, 20796009]

約数ペア:

[(1, 20796009), (3, 6932003), (13, 1599693), (31, 670839), (39, 533231), (93, 223613), (103, 201903), (167, 124527), (309, 67301), (403, 51603), (501, 41509), (1209, 17201), (1339, 15531), (2171, 9579), (3193, 6513), (4017, 5177)]