20076940

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{2087}}^1$

素因数の和:2146

約数の個数: 48

約数和(自身を含む): 46654272

約数和(自身を除く): 26577332

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 37, 52, 65, 74, 130, 148, 185, 260, 370, 481, 740, 962, 1924, 2087, 2405, 4174, 4810, 8348, 9620, 10435, 20870, 27131, 41740, 54262, 77219, 108524, 135655, 154438, 271310, 308876, 386095, 542620, 772190, 1003847, 1544380, 2007694, 4015388, 5019235, 10038470, 20076940]

約数ペア:

[(1, 20076940), (2, 10038470), (4, 5019235), (5, 4015388), (10, 2007694), (13, 1544380), (20, 1003847), (26, 772190), (37, 542620), (52, 386095), (65, 308876), (74, 271310), (130, 154438), (148, 135655), (185, 108524), (260, 77219), (370, 54262), (481, 41740), (740, 27131), (962, 20870), (1924, 10435), (2087, 9620), (2405, 8348), (4174, 4810)]