28266940

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^2\times {\mathrm{8363}}^1$

素因数の和:8398

約数の個数: 36

約数和(自身を含む): 64285704

約数和(自身を除く): 36018764

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 169, 260, 338, 676, 845, 1690, 3380, 8363, 16726, 33452, 41815, 83630, 108719, 167260, 217438, 434876, 543595, 1087190, 1413347, 2174380, 2826694, 5653388, 7066735, 14133470, 28266940]

約数ペア:

[(1, 28266940), (2, 14133470), (4, 7066735), (5, 5653388), (10, 2826694), (13, 2174380), (20, 1413347), (26, 1087190), (52, 543595), (65, 434876), (130, 217438), (169, 167260), (260, 108719), (338, 83630), (676, 41815), (845, 33452), (1690, 16726), (3380, 8363)]