80528560

素因数分解:

$2^4\times 5^1\times 7^2\times {\mathrm{20543}}^1$

素因数の和:20570

約数の個数: 60

約数和(自身を含む): 217807488

約数和(自身を除く): 137278928

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 49, 56, 70, 80, 98, 112, 140, 196, 245, 280, 392, 490, 560, 784, 980, 1960, 3920, 20543, 41086, 82172, 102715, 143801, 164344, 205430, 287602, 328688, 410860, 575204, 719005, 821720, 1006607, 1150408, 1438010, 1643440, 2013214, 2300816, 2876020, 4026428, 5033035, 5752040, 8052856, 10066070, 11504080, 16105712, 20132140, 40264280, 80528560]

約数ペア:

[(1, 80528560), (2, 40264280), (4, 20132140), (5, 16105712), (7, 11504080), (8, 10066070), (10, 8052856), (14, 5752040), (16, 5033035), (20, 4026428), (28, 2876020), (35, 2300816), (40, 2013214), (49, 1643440), (56, 1438010), (70, 1150408), (80, 1006607), (98, 821720), (112, 719005), (140, 575204), (196, 410860), (245, 328688), (280, 287602), (392, 205430), (490, 164344), (560, 143801), (784, 102715), (980, 82172), (1960, 41086), (3920, 20543)]