20896850

素因数分解:

$2^1\times 5^2\times {\mathrm{13}}^2\times {\mathrm{2473}}^1$

素因数の和:2511

約数の個数: 36

約数和(自身を含む): 42105006

約数和(自身を除く): 21208156

約数列:

[1, 2, 5, 10, 13, 25, 26, 50, 65, 130, 169, 325, 338, 650, 845, 1690, 2473, 4225, 4946, 8450, 12365, 24730, 32149, 61825, 64298, 123650, 160745, 321490, 417937, 803725, 835874, 1607450, 2089685, 4179370, 10448425, 20896850]

約数ペア:

[(1, 20896850), (2, 10448425), (5, 4179370), (10, 2089685), (13, 1607450), (25, 835874), (26, 803725), (50, 417937), (65, 321490), (130, 160745), (169, 123650), (325, 64298), (338, 61825), (650, 32149), (845, 24730), (1690, 12365), (2473, 8450), (4225, 4946)]