20509080

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{277}}^1\times {\mathrm{617}}^1$

素因数の和:908

約数の個数: 64

約数和(自身を含む): 61849440

約数和(自身を除く): 41340360

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 40, 60, 120, 277, 554, 617, 831, 1108, 1234, 1385, 1662, 1851, 2216, 2468, 2770, 3085, 3324, 3702, 4155, 4936, 5540, 6170, 6648, 7404, 8310, 9255, 11080, 12340, 14808, 16620, 18510, 24680, 33240, 37020, 74040, 170909, 341818, 512727, 683636, 854545, 1025454, 1367272, 1709090, 2050908, 2563635, 3418180, 4101816, 5127270, 6836360, 10254540, 20509080]

約数ペア:

[(1, 20509080), (2, 10254540), (3, 6836360), (4, 5127270), (5, 4101816), (6, 3418180), (8, 2563635), (10, 2050908), (12, 1709090), (15, 1367272), (20, 1025454), (24, 854545), (30, 683636), (40, 512727), (60, 341818), (120, 170909), (277, 74040), (554, 37020), (617, 33240), (831, 24680), (1108, 18510), (1234, 16620), (1385, 14808), (1662, 12340), (1851, 11080), (2216, 9255), (2468, 8310), (2770, 7404), (3085, 6648), (3324, 6170), (3702, 5540), (4155, 4936)]