20791620

素因数分解:

$2^2\times 3^3\times 5^1\times {\mathrm{139}}^1\times {\mathrm{277}}^1$

素因数の和:434

約数の個数: 96

約数和(自身を含む): 65385600

約数和(自身を除く): 44593980

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 27, 30, 36, 45, 54, 60, 90, 108, 135, 139, 180, 270, 277, 278, 417, 540, 554, 556, 695, 831, 834, 1108, 1251, 1385, 1390, 1662, 1668, 2085, 2493, 2502, 2770, 2780, 3324, 3753, 4155, 4170, 4986, 5004, 5540, 6255, 7479, 7506, 8310, 8340, 9972, 12465, 12510, 14958, 15012, 16620, 18765, 24930, 25020, 29916, 37395, 37530, 38503, 49860, 74790, 75060, 77006, 115509, 149580, 154012, 192515, 231018, 346527, 385030, 462036, 577545, 693054, 770060, 1039581, 1155090, 1386108, 1732635, 2079162, 2310180, 3465270, 4158324, 5197905, 6930540, 10395810, 20791620]

約数ペア:

[(1, 20791620), (2, 10395810), (3, 6930540), (4, 5197905), (5, 4158324), (6, 3465270), (9, 2310180), (10, 2079162), (12, 1732635), (15, 1386108), (18, 1155090), (20, 1039581), (27, 770060), (30, 693054), (36, 577545), (45, 462036), (54, 385030), (60, 346527), (90, 231018), (108, 192515), (135, 154012), (139, 149580), (180, 115509), (270, 77006), (277, 75060), (278, 74790), (417, 49860), (540, 38503), (554, 37530), (556, 37395), (695, 29916), (831, 25020), (834, 24930), (1108, 18765), (1251, 16620), (1385, 15012), (1390, 14958), (1662, 12510), (1668, 12465), (2085, 9972), (2493, 8340), (2502, 8310), (2770, 7506), (2780, 7479), (3324, 6255), (3753, 5540), (4155, 5004), (4170, 4986)]