1639179920

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{37}}^1\times {\mathrm{79111}}^1$

素因数の和:79168

約数の個数: 80

約数和(自身を含む): 4473308928

約数和(自身を除く): 2834129008

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 37, 40, 56, 70, 74, 80, 112, 140, 148, 185, 259, 280, 296, 370, 518, 560, 592, 740, 1036, 1295, 1480, 2072, 2590, 2960, 4144, 5180, 10360, 20720, 79111, 158222, 316444, 395555, 553777, 632888, 791110, 1107554, 1265776, 1582220, 2215108, 2768885, 2927107, 3164440, 4430216, 5537770, 5854214, 6328880, 8860432, 11075540, 11708428, 14635535, 20489749, 22151080, 23416856, 29271070, 40979498, 44302160, 46833712, 58542140, 81958996, 102448745, 117084280, 163917992, 204897490, 234168560, 327835984, 409794980, 819589960, 1639179920]

約数ペア:

[(1, 1639179920), (2, 819589960), (4, 409794980), (5, 327835984), (7, 234168560), (8, 204897490), (10, 163917992), (14, 117084280), (16, 102448745), (20, 81958996), (28, 58542140), (35, 46833712), (37, 44302160), (40, 40979498), (56, 29271070), (70, 23416856), (74, 22151080), (80, 20489749), (112, 14635535), (140, 11708428), (148, 11075540), (185, 8860432), (259, 6328880), (280, 5854214), (296, 5537770), (370, 4430216), (518, 3164440), (560, 2927107), (592, 2768885), (740, 2215108), (1036, 1582220), (1295, 1265776), (1480, 1107554), (2072, 791110), (2590, 632888), (2960, 553777), (4144, 395555), (5180, 316444), (10360, 158222), (20720, 79111)]