7971880

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{71}}^1\times {\mathrm{401}}^1$

素因数の和:490

約数の個数: 64

約数和(自身を含む): 20839680

約数和(自身を除く): 12867800

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 71, 140, 142, 280, 284, 355, 401, 497, 568, 710, 802, 994, 1420, 1604, 1988, 2005, 2485, 2807, 2840, 3208, 3976, 4010, 4970, 5614, 8020, 9940, 11228, 14035, 16040, 19880, 22456, 28070, 28471, 56140, 56942, 112280, 113884, 142355, 199297, 227768, 284710, 398594, 569420, 797188, 996485, 1138840, 1594376, 1992970, 3985940, 7971880]

約数ペア:

[(1, 7971880), (2, 3985940), (4, 1992970), (5, 1594376), (7, 1138840), (8, 996485), (10, 797188), (14, 569420), (20, 398594), (28, 284710), (35, 227768), (40, 199297), (56, 142355), (70, 113884), (71, 112280), (140, 56942), (142, 56140), (280, 28471), (284, 28070), (355, 22456), (401, 19880), (497, 16040), (568, 14035), (710, 11228), (802, 9940), (994, 8020), (1420, 5614), (1604, 4970), (1988, 4010), (2005, 3976), (2485, 3208), (2807, 2840)]