281128840

素因数分解:

$2^3\times 5^1\times {\mathrm{43}}^1\times {\mathrm{73}}^1\times {\mathrm{2239}}^1$

素因数の和:2366

約数の個数: 64

約数和(自身を含む): 656409600

約数和(自身を除く): 375280760

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 43, 73, 86, 146, 172, 215, 292, 344, 365, 430, 584, 730, 860, 1460, 1720, 2239, 2920, 3139, 4478, 6278, 8956, 11195, 12556, 15695, 17912, 22390, 25112, 31390, 44780, 62780, 89560, 96277, 125560, 163447, 192554, 326894, 385108, 481385, 653788, 770216, 817235, 962770, 1307576, 1634470, 1925540, 3268940, 3851080, 6537880, 7028221, 14056442, 28112884, 35141105, 56225768, 70282210, 140564420, 281128840]

約数ペア:

[(1, 281128840), (2, 140564420), (4, 70282210), (5, 56225768), (8, 35141105), (10, 28112884), (20, 14056442), (40, 7028221), (43, 6537880), (73, 3851080), (86, 3268940), (146, 1925540), (172, 1634470), (215, 1307576), (292, 962770), (344, 817235), (365, 770216), (430, 653788), (584, 481385), (730, 385108), (860, 326894), (1460, 192554), (1720, 163447), (2239, 125560), (2920, 96277), (3139, 89560), (4478, 62780), (6278, 44780), (8956, 31390), (11195, 25112), (12556, 22390), (15695, 17912)]