71479480

素因数分解:

$2^3\times 5^1\times {\mathrm{47}}^1\times {\mathrm{193}}^1\times {\mathrm{197}}^1$

素因数の和:448

約数の個数: 64

約数和(自身を含む): 165939840

約数和(自身を除く): 94460360

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 47, 94, 188, 193, 197, 235, 376, 386, 394, 470, 772, 788, 940, 965, 985, 1544, 1576, 1880, 1930, 1970, 3860, 3940, 7720, 7880, 9071, 9259, 18142, 18518, 36284, 37036, 38021, 45355, 46295, 72568, 74072, 76042, 90710, 92590, 152084, 181420, 185180, 190105, 304168, 362840, 370360, 380210, 760420, 1520840, 1786987, 3573974, 7147948, 8934935, 14295896, 17869870, 35739740, 71479480]

約数ペア:

[(1, 71479480), (2, 35739740), (4, 17869870), (5, 14295896), (8, 8934935), (10, 7147948), (20, 3573974), (40, 1786987), (47, 1520840), (94, 760420), (188, 380210), (193, 370360), (197, 362840), (235, 304168), (376, 190105), (386, 185180), (394, 181420), (470, 152084), (772, 92590), (788, 90710), (940, 76042), (965, 74072), (985, 72568), (1544, 46295), (1576, 45355), (1880, 38021), (1930, 37036), (1970, 36284), (3860, 18518), (3940, 18142), (7720, 9259), (7880, 9071)]