200907380

素因数分解:

$2^2\times 5^1\times {\mathrm{41}}^1\times {\mathrm{491}}^1\times {\mathrm{499}}^1$

素因数の和:1040

約数の個数: 48

約数和(自身を含む): 433944000

約数和(自身を除く): 233036620

約数列:

[1, 2, 4, 5, 10, 20, 41, 82, 164, 205, 410, 491, 499, 820, 982, 998, 1964, 1996, 2455, 2495, 4910, 4990, 9820, 9980, 20131, 20459, 40262, 40918, 80524, 81836, 100655, 102295, 201310, 204590, 245009, 402620, 409180, 490018, 980036, 1225045, 2450090, 4900180, 10045369, 20090738, 40181476, 50226845, 100453690, 200907380]

約数ペア:

[(1, 200907380), (2, 100453690), (4, 50226845), (5, 40181476), (10, 20090738), (20, 10045369), (41, 4900180), (82, 2450090), (164, 1225045), (205, 980036), (410, 490018), (491, 409180), (499, 402620), (820, 245009), (982, 204590), (998, 201310), (1964, 102295), (1996, 100655), (2455, 81836), (2495, 80524), (4910, 40918), (4990, 40262), (9820, 20459), (9980, 20131)]