2819080

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{43}}^1\times {\mathrm{149}}^1$

素因数の和:214

約数の個数: 64

約数和(自身を含む): 7128000

約数和(自身を除く): 4308920

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 43, 44, 55, 86, 88, 110, 149, 172, 215, 220, 298, 344, 430, 440, 473, 596, 745, 860, 946, 1192, 1490, 1639, 1720, 1892, 2365, 2980, 3278, 3784, 4730, 5960, 6407, 6556, 8195, 9460, 12814, 13112, 16390, 18920, 25628, 32035, 32780, 51256, 64070, 65560, 70477, 128140, 140954, 256280, 281908, 352385, 563816, 704770, 1409540, 2819080]

約数ペア:

[(1, 2819080), (2, 1409540), (4, 704770), (5, 563816), (8, 352385), (10, 281908), (11, 256280), (20, 140954), (22, 128140), (40, 70477), (43, 65560), (44, 64070), (55, 51256), (86, 32780), (88, 32035), (110, 25628), (149, 18920), (172, 16390), (215, 13112), (220, 12814), (298, 9460), (344, 8195), (430, 6556), (440, 6407), (473, 5960), (596, 4730), (745, 3784), (860, 3278), (946, 2980), (1192, 2365), (1490, 1892), (1639, 1720)]