20702540

素因数分解:

$2^2\times 5^1\times {\mathrm{41}}^1\times {\mathrm{25247}}^1$

素因数の和:25297

約数の個数: 24

約数和(自身を含む): 44537472

約数和(自身を除く): 23834932

約数列:

[1, 2, 4, 5, 10, 20, 41, 82, 164, 205, 410, 820, 25247, 50494, 100988, 126235, 252470, 504940, 1035127, 2070254, 4140508, 5175635, 10351270, 20702540]

約数ペア:

[(1, 20702540), (2, 10351270), (4, 5175635), (5, 4140508), (10, 2070254), (20, 1035127), (41, 504940), (82, 252470), (164, 126235), (205, 100988), (410, 50494), (820, 25247)]