13259720

素因数分解:

$2^3\times 5^1\times {\mathrm{19}}^1\times {\mathrm{73}}^1\times {\mathrm{239}}^1$

素因数の和:342

約数の個数: 64

約数和(自身を含む): 31968000

約数和(自身を除く): 18708280

約数列:

[1, 2, 4, 5, 8, 10, 19, 20, 38, 40, 73, 76, 95, 146, 152, 190, 239, 292, 365, 380, 478, 584, 730, 760, 956, 1195, 1387, 1460, 1912, 2390, 2774, 2920, 4541, 4780, 5548, 6935, 9082, 9560, 11096, 13870, 17447, 18164, 22705, 27740, 34894, 36328, 45410, 55480, 69788, 87235, 90820, 139576, 174470, 181640, 331493, 348940, 662986, 697880, 1325972, 1657465, 2651944, 3314930, 6629860, 13259720]

約数ペア:

[(1, 13259720), (2, 6629860), (4, 3314930), (5, 2651944), (8, 1657465), (10, 1325972), (19, 697880), (20, 662986), (38, 348940), (40, 331493), (73, 181640), (76, 174470), (95, 139576), (146, 90820), (152, 87235), (190, 69788), (239, 55480), (292, 45410), (365, 36328), (380, 34894), (478, 27740), (584, 22705), (730, 18164), (760, 17447), (956, 13870), (1195, 11096), (1387, 9560), (1460, 9082), (1912, 6935), (2390, 5548), (2774, 4780), (2920, 4541)]