20712545

素因数分解:

$5^1\times 7^2\times {\mathrm{17}}^1\times {\mathrm{4973}}^1$

素因数の和:5009

約数の個数: 24

約数和(自身を含む): 30619944

約数和(自身を除く): 9907399

約数列:

[1, 5, 7, 17, 35, 49, 85, 119, 245, 595, 833, 4165, 4973, 24865, 34811, 84541, 174055, 243677, 422705, 591787, 1218385, 2958935, 4142509, 20712545]

約数ペア:

[(1, 20712545), (5, 4142509), (7, 2958935), (17, 1218385), (35, 591787), (49, 422705), (85, 243677), (119, 174055), (245, 84541), (595, 34811), (833, 24865), (4165, 4973)]