20613080

素因数分解:

$2^3\times 5^1\times {\mathrm{311}}^1\times {\mathrm{1657}}^1$

素因数の和:1979

約数の個数: 32

約数和(自身を含む): 46556640

約数和(自身を除く): 25943560

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 311, 622, 1244, 1555, 1657, 2488, 3110, 3314, 6220, 6628, 8285, 12440, 13256, 16570, 33140, 66280, 515327, 1030654, 2061308, 2576635, 4122616, 5153270, 10306540, 20613080]

約数ペア:

[(1, 20613080), (2, 10306540), (4, 5153270), (5, 4122616), (8, 2576635), (10, 2061308), (20, 1030654), (40, 515327), (311, 66280), (622, 33140), (1244, 16570), (1555, 13256), (1657, 12440), (2488, 8285), (3110, 6628), (3314, 6220)]