639409810

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^2\times {\mathrm{67}}^1\times {\mathrm{5647}}^1$

素因数の和:5747

約数の個数: 48

約数和(自身を含む): 1265106816

約数和(自身を除く): 625697006

約数列:

[1, 2, 5, 10, 13, 26, 65, 67, 130, 134, 169, 335, 338, 670, 845, 871, 1690, 1742, 4355, 5647, 8710, 11294, 11323, 22646, 28235, 56470, 56615, 73411, 113230, 146822, 367055, 378349, 734110, 756698, 954343, 1891745, 1908686, 3783490, 4771715, 4918537, 9543430, 9837074, 24592685, 49185370, 63940981, 127881962, 319704905, 639409810]

約数ペア:

[(1, 639409810), (2, 319704905), (5, 127881962), (10, 63940981), (13, 49185370), (26, 24592685), (65, 9837074), (67, 9543430), (130, 4918537), (134, 4771715), (169, 3783490), (335, 1908686), (338, 1891745), (670, 954343), (845, 756698), (871, 734110), (1690, 378349), (1742, 367055), (4355, 146822), (5647, 113230), (8710, 73411), (11294, 56615), (11323, 56470), (22646, 28235)]