28688840

素因数分解:

$2^3\times 5^1\times {\mathrm{107}}^1\times {\mathrm{6703}}^1$

素因数の和:6821

約数の個数: 32

約数和(自身を含む): 65162880

約数和(自身を除く): 36474040

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 107, 214, 428, 535, 856, 1070, 2140, 4280, 6703, 13406, 26812, 33515, 53624, 67030, 134060, 268120, 717221, 1434442, 2868884, 3586105, 5737768, 7172210, 14344420, 28688840]

約数ペア:

[(1, 28688840), (2, 14344420), (4, 7172210), (5, 5737768), (8, 3586105), (10, 2868884), (20, 1434442), (40, 717221), (107, 268120), (214, 134060), (428, 67030), (535, 53624), (856, 33515), (1070, 26812), (2140, 13406), (4280, 6703)]