79897720

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{71}}^1\times {\mathrm{4019}}^1$

素因数の和:4108

約数の個数: 64

約数和(自身を含む): 208396800

約数和(自身を除く): 128499080

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, 3976, 4019, 4970, 8038, 9940, 16076, 19880, 20095, 28133, 32152, 40190, 56266, 80380, 112532, 140665, 160760, 225064, 281330, 285349, 562660, 570698, 1125320, 1141396, 1426745, 1997443, 2282792, 2853490, 3994886, 5706980, 7989772, 9987215, 11413960, 15979544, 19974430, 39948860, 79897720]

約数ペア:

[(1, 79897720), (2, 39948860), (4, 19974430), (5, 15979544), (7, 11413960), (8, 9987215), (10, 7989772), (14, 5706980), (20, 3994886), (28, 2853490), (35, 2282792), (40, 1997443), (56, 1426745), (70, 1141396), (71, 1125320), (140, 570698), (142, 562660), (280, 285349), (284, 281330), (355, 225064), (497, 160760), (568, 140665), (710, 112532), (994, 80380), (1420, 56266), (1988, 40190), (2485, 32152), (2840, 28133), (3976, 20095), (4019, 19880), (4970, 16076), (8038, 9940)]