28178840

素因数分解:

$2^3\times 5^1\times {\mathrm{659}}^1\times {\mathrm{1069}}^1$

素因数の和:1739

約数の個数: 32

約数和(自身を含む): 63558000

約数和(自身を除く): 35379160

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 659, 1069, 1318, 2138, 2636, 3295, 4276, 5272, 5345, 6590, 8552, 10690, 13180, 21380, 26360, 42760, 704471, 1408942, 2817884, 3522355, 5635768, 7044710, 14089420, 28178840]

約数ペア:

[(1, 28178840), (2, 14089420), (4, 7044710), (5, 5635768), (8, 3522355), (10, 2817884), (20, 1408942), (40, 704471), (659, 42760), (1069, 26360), (1318, 21380), (2138, 13180), (2636, 10690), (3295, 8552), (4276, 6590), (5272, 5345)]