639551470

素因数分解:

$2^1\times 5^1\times {\mathrm{43}}^1\times {\mathrm{929}}^1\times {\mathrm{1601}}^1$

素因数の和:2580

約数の個数: 32

約数和(自身を含む): 1179969120

約数和(自身を除く): 540417650

約数列:

[1, 2, 5, 10, 43, 86, 215, 430, 929, 1601, 1858, 3202, 4645, 8005, 9290, 16010, 39947, 68843, 79894, 137686, 199735, 344215, 399470, 688430, 1487329, 2974658, 7436645, 14873290, 63955147, 127910294, 319775735, 639551470]

約数ペア:

[(1, 639551470), (2, 319775735), (5, 127910294), (10, 63955147), (43, 14873290), (86, 7436645), (215, 2974658), (430, 1487329), (929, 688430), (1601, 399470), (1858, 344215), (3202, 199735), (4645, 137686), (8005, 79894), (9290, 68843), (16010, 39947)]