66816680

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{71}}^1\times {\mathrm{3361}}^1$

素因数の和:3450

約数の個数: 64

約数和(自身を含む): 174286080

約数和(自身を除く): 107469400

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 71, 140, 142, 280, 284, 355, 497, 568, 710, 994, 1420, 1988, 2485, 2840, 3361, 3976, 4970, 6722, 9940, 13444, 16805, 19880, 23527, 26888, 33610, 47054, 67220, 94108, 117635, 134440, 188216, 235270, 238631, 470540, 477262, 941080, 954524, 1193155, 1670417, 1909048, 2386310, 3340834, 4772620, 6681668, 8352085, 9545240, 13363336, 16704170, 33408340, 66816680]

約数ペア:

[(1, 66816680), (2, 33408340), (4, 16704170), (5, 13363336), (7, 9545240), (8, 8352085), (10, 6681668), (14, 4772620), (20, 3340834), (28, 2386310), (35, 1909048), (40, 1670417), (56, 1193155), (70, 954524), (71, 941080), (140, 477262), (142, 470540), (280, 238631), (284, 235270), (355, 188216), (497, 134440), (568, 117635), (710, 94108), (994, 67220), (1420, 47054), (1988, 33610), (2485, 26888), (2840, 23527), (3361, 19880), (3976, 16805), (4970, 13444), (6722, 9940)]