20951520

素因数分解:

$2^5\times 3^1\times 5^1\times {\mathrm{43649}}^1$

素因数の和:43667

約数の個数: 48

約数和(自身を含む): 65998800

約数和(自身を除く): 45047280

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 32, 40, 48, 60, 80, 96, 120, 160, 240, 480, 43649, 87298, 130947, 174596, 218245, 261894, 349192, 436490, 523788, 654735, 698384, 872980, 1047576, 1309470, 1396768, 1745960, 2095152, 2618940, 3491920, 4190304, 5237880, 6983840, 10475760, 20951520]

約数ペア:

[(1, 20951520), (2, 10475760), (3, 6983840), (4, 5237880), (5, 4190304), (6, 3491920), (8, 2618940), (10, 2095152), (12, 1745960), (15, 1396768), (16, 1309470), (20, 1047576), (24, 872980), (30, 698384), (32, 654735), (40, 523788), (48, 436490), (60, 349192), (80, 261894), (96, 218245), (120, 174596), (160, 130947), (240, 87298), (480, 43649)]