20270840

素因数分解:

$2^3\times 5^1\times {\mathrm{659}}^1\times {\mathrm{769}}^1$

素因数の和:1439

約数の個数: 32

約数和(自身を含む): 45738000

約数和(自身を除く): 25467160

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 659, 769, 1318, 1538, 2636, 3076, 3295, 3845, 5272, 6152, 6590, 7690, 13180, 15380, 26360, 30760, 506771, 1013542, 2027084, 2533855, 4054168, 5067710, 10135420, 20270840]

約数ペア:

[(1, 20270840), (2, 10135420), (4, 5067710), (5, 4054168), (8, 2533855), (10, 2027084), (20, 1013542), (40, 506771), (659, 30760), (769, 26360), (1318, 15380), (1538, 13180), (2636, 7690), (3076, 6590), (3295, 6152), (3845, 5272)]