28688820

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{23}}^1\times {\mathrm{20789}}^1$

素因数の和:20824

約数の個数: 48

約数和(自身を含む): 83825280

約数和(自身を除く): 55136460

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 23, 30, 46, 60, 69, 92, 115, 138, 230, 276, 345, 460, 690, 1380, 20789, 41578, 62367, 83156, 103945, 124734, 207890, 249468, 311835, 415780, 478147, 623670, 956294, 1247340, 1434441, 1912588, 2390735, 2868882, 4781470, 5737764, 7172205, 9562940, 14344410, 28688820]

約数ペア:

[(1, 28688820), (2, 14344410), (3, 9562940), (4, 7172205), (5, 5737764), (6, 4781470), (10, 2868882), (12, 2390735), (15, 1912588), (20, 1434441), (23, 1247340), (30, 956294), (46, 623670), (60, 478147), (69, 415780), (92, 311835), (115, 249468), (138, 207890), (230, 124734), (276, 103945), (345, 83156), (460, 62367), (690, 41578), (1380, 20789)]