19520920

素因数分解:

$2^3\times 5^1\times {\mathrm{41}}^1\times {\mathrm{11903}}^1$

素因数の和:11955

約数の個数: 32

約数和(自身を含む): 44997120

約数和(自身を除く): 25476200

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 41, 82, 164, 205, 328, 410, 820, 1640, 11903, 23806, 47612, 59515, 95224, 119030, 238060, 476120, 488023, 976046, 1952092, 2440115, 3904184, 4880230, 9760460, 19520920]

約数ペア:

[(1, 19520920), (2, 9760460), (4, 4880230), (5, 3904184), (8, 2440115), (10, 1952092), (20, 976046), (40, 488023), (41, 476120), (82, 238060), (164, 119030), (205, 95224), (328, 59515), (410, 47612), (820, 23806), (1640, 11903)]