20880885

素因数分解:

$3^1\times 5^1\times {\mathrm{67}}^1\times {\mathrm{79}}^1\times {\mathrm{263}}^1$

素因数の和:417

約数の個数: 32

約数和(自身を含む): 34467840

約数和(自身を除く): 13586955

約数列:

[1, 3, 5, 15, 67, 79, 201, 237, 263, 335, 395, 789, 1005, 1185, 1315, 3945, 5293, 15879, 17621, 20777, 26465, 52863, 62331, 79395, 88105, 103885, 264315, 311655, 1392059, 4176177, 6960295, 20880885]

約数ペア:

[(1, 20880885), (3, 6960295), (5, 4176177), (15, 1392059), (67, 311655), (79, 264315), (201, 103885), (237, 88105), (263, 79395), (335, 62331), (395, 52863), (789, 26465), (1005, 20777), (1185, 17621), (1315, 15879), (3945, 5293)]