81962860

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{307}}^1\times {\mathrm{1907}}^1$

素因数の和:2230

約数の個数: 48

約数和(自身を含む): 197455104

約数和(自身を除く): 115492244

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 307, 614, 1228, 1535, 1907, 2149, 3070, 3814, 4298, 6140, 7628, 8596, 9535, 10745, 13349, 19070, 21490, 26698, 38140, 42980, 53396, 66745, 133490, 266980, 585449, 1170898, 2341796, 2927245, 4098143, 5854490, 8196286, 11708980, 16392572, 20490715, 40981430, 81962860]

約数ペア:

[(1, 81962860), (2, 40981430), (4, 20490715), (5, 16392572), (7, 11708980), (10, 8196286), (14, 5854490), (20, 4098143), (28, 2927245), (35, 2341796), (70, 1170898), (140, 585449), (307, 266980), (614, 133490), (1228, 66745), (1535, 53396), (1907, 42980), (2149, 38140), (3070, 26698), (3814, 21490), (4298, 19070), (6140, 13349), (7628, 10745), (8596, 9535)]