996858740

素因数分解:

$2^2\times 5^1\times {\mathrm{89}}^1\times {\mathrm{281}}^1\times {\mathrm{1993}}^1$

素因数の和:2372

約数の個数: 48

約数和(自身を含む): 2125524240

約数和(自身を除く): 1128665500

約数列:

[1, 2, 4, 5, 10, 20, 89, 178, 281, 356, 445, 562, 890, 1124, 1405, 1780, 1993, 2810, 3986, 5620, 7972, 9965, 19930, 25009, 39860, 50018, 100036, 125045, 177377, 250090, 354754, 500180, 560033, 709508, 886885, 1120066, 1773770, 2240132, 2800165, 3547540, 5600330, 11200660, 49842937, 99685874, 199371748, 249214685, 498429370, 996858740]

約数ペア:

[(1, 996858740), (2, 498429370), (4, 249214685), (5, 199371748), (10, 99685874), (20, 49842937), (89, 11200660), (178, 5600330), (281, 3547540), (356, 2800165), (445, 2240132), (562, 1773770), (890, 1120066), (1124, 886885), (1405, 709508), (1780, 560033), (1993, 500180), (2810, 354754), (3986, 250090), (5620, 177377), (7972, 125045), (9965, 100036), (19930, 50018), (25009, 39860)]