78812440

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{397}}^1\times {\mathrm{709}}^1$

素因数の和:1124

約数の個数: 64

約数和(自身を含む): 203457600

約数和(自身を除く): 124645160

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 397, 709, 794, 1418, 1588, 1985, 2779, 2836, 3176, 3545, 3970, 4963, 5558, 5672, 7090, 7940, 9926, 11116, 13895, 14180, 15880, 19852, 22232, 24815, 27790, 28360, 39704, 49630, 55580, 99260, 111160, 198520, 281473, 562946, 1125892, 1407365, 1970311, 2251784, 2814730, 3940622, 5629460, 7881244, 9851555, 11258920, 15762488, 19703110, 39406220, 78812440]

約数ペア:

[(1, 78812440), (2, 39406220), (4, 19703110), (5, 15762488), (7, 11258920), (8, 9851555), (10, 7881244), (14, 5629460), (20, 3940622), (28, 2814730), (35, 2251784), (40, 1970311), (56, 1407365), (70, 1125892), (140, 562946), (280, 281473), (397, 198520), (709, 111160), (794, 99260), (1418, 55580), (1588, 49630), (1985, 39704), (2779, 28360), (2836, 27790), (3176, 24815), (3545, 22232), (3970, 19852), (4963, 15880), (5558, 14180), (5672, 13895), (7090, 11116), (7940, 9926)]