78531320

素因数分解:

$2^3\times 5^1\times 7^2\times {\mathrm{103}}^1\times {\mathrm{389}}^1$

素因数の和:517

約数の個数: 96

約数和(自身を含む): 208072800

約数和(自身を除く): 129541480

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 49, 56, 70, 98, 103, 140, 196, 206, 245, 280, 389, 392, 412, 490, 515, 721, 778, 824, 980, 1030, 1442, 1556, 1945, 1960, 2060, 2723, 2884, 3112, 3605, 3890, 4120, 5047, 5446, 5768, 7210, 7780, 10094, 10892, 13615, 14420, 15560, 19061, 20188, 21784, 25235, 27230, 28840, 38122, 40067, 40376, 50470, 54460, 76244, 80134, 95305, 100940, 108920, 152488, 160268, 190610, 200335, 201880, 280469, 320536, 381220, 400670, 560938, 762440, 801340, 1121876, 1402345, 1602680, 1963283, 2243752, 2804690, 3926566, 5609380, 7853132, 9816415, 11218760, 15706264, 19632830, 39265660, 78531320]

約数ペア:

[(1, 78531320), (2, 39265660), (4, 19632830), (5, 15706264), (7, 11218760), (8, 9816415), (10, 7853132), (14, 5609380), (20, 3926566), (28, 2804690), (35, 2243752), (40, 1963283), (49, 1602680), (56, 1402345), (70, 1121876), (98, 801340), (103, 762440), (140, 560938), (196, 400670), (206, 381220), (245, 320536), (280, 280469), (389, 201880), (392, 200335), (412, 190610), (490, 160268), (515, 152488), (721, 108920), (778, 100940), (824, 95305), (980, 80134), (1030, 76244), (1442, 54460), (1556, 50470), (1945, 40376), (1960, 40067), (2060, 38122), (2723, 28840), (2884, 27230), (3112, 25235), (3605, 21784), (3890, 20188), (4120, 19061), (5047, 15560), (5446, 14420), (5768, 13615), (7210, 10892), (7780, 10094)]