28182280

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{251}}^1\times {\mathrm{401}}^1$

素因数の和:670

約数の個数: 64

約数和(自身を含む): 72938880

約数和(自身を除く): 44756600

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 251, 280, 401, 502, 802, 1004, 1255, 1604, 1757, 2005, 2008, 2510, 2807, 3208, 3514, 4010, 5020, 5614, 7028, 8020, 8785, 10040, 11228, 14035, 14056, 16040, 17570, 22456, 28070, 35140, 56140, 70280, 100651, 112280, 201302, 402604, 503255, 704557, 805208, 1006510, 1409114, 2013020, 2818228, 3522785, 4026040, 5636456, 7045570, 14091140, 28182280]

約数ペア:

[(1, 28182280), (2, 14091140), (4, 7045570), (5, 5636456), (7, 4026040), (8, 3522785), (10, 2818228), (14, 2013020), (20, 1409114), (28, 1006510), (35, 805208), (40, 704557), (56, 503255), (70, 402604), (140, 201302), (251, 112280), (280, 100651), (401, 70280), (502, 56140), (802, 35140), (1004, 28070), (1255, 22456), (1604, 17570), (1757, 16040), (2005, 14056), (2008, 14035), (2510, 11228), (2807, 10040), (3208, 8785), (3514, 8020), (4010, 7028), (5020, 5614)]