8403220

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{193}}^1\times {\mathrm{311}}^1$

素因数の和:520

約数の個数: 48

約数和(自身を含む): 20337408

約数和(自身を除く): 11934188

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 193, 311, 386, 622, 772, 965, 1244, 1351, 1555, 1930, 2177, 2702, 3110, 3860, 4354, 5404, 6220, 6755, 8708, 10885, 13510, 21770, 27020, 43540, 60023, 120046, 240092, 300115, 420161, 600230, 840322, 1200460, 1680644, 2100805, 4201610, 8403220]

約数ペア:

[(1, 8403220), (2, 4201610), (4, 2100805), (5, 1680644), (7, 1200460), (10, 840322), (14, 600230), (20, 420161), (28, 300115), (35, 240092), (70, 120046), (140, 60023), (193, 43540), (311, 27020), (386, 21770), (622, 13510), (772, 10885), (965, 8708), (1244, 6755), (1351, 6220), (1555, 5404), (1930, 4354), (2177, 3860), (2702, 3110)]