28727140

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{313}}^1\times {\mathrm{353}}^1$

素因数の和:688

約数の個数: 48

約数和(自身を含む): 65359728

約数和(自身を除く): 36632588

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 313, 353, 626, 706, 1252, 1412, 1565, 1765, 3130, 3530, 4069, 4589, 6260, 7060, 8138, 9178, 16276, 18356, 20345, 22945, 40690, 45890, 81380, 91780, 110489, 220978, 441956, 552445, 1104890, 1436357, 2209780, 2872714, 5745428, 7181785, 14363570, 28727140]

約数ペア:

[(1, 28727140), (2, 14363570), (4, 7181785), (5, 5745428), (10, 2872714), (13, 2209780), (20, 1436357), (26, 1104890), (52, 552445), (65, 441956), (130, 220978), (260, 110489), (313, 91780), (353, 81380), (626, 45890), (706, 40690), (1252, 22945), (1412, 20345), (1565, 18356), (1765, 16276), (3130, 9178), (3530, 8138), (4069, 7060), (4589, 6260)]