20523920

素因数分解:

$2^4\times 5^1\times {\mathrm{151}}^1\times {\mathrm{1699}}^1$

素因数の和:1863

約数の個数: 40

約数和(自身を含む): 48062400

約数和(自身を除く): 27538480

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 151, 302, 604, 755, 1208, 1510, 1699, 2416, 3020, 3398, 6040, 6796, 8495, 12080, 13592, 16990, 27184, 33980, 67960, 135920, 256549, 513098, 1026196, 1282745, 2052392, 2565490, 4104784, 5130980, 10261960, 20523920]

約数ペア:

[(1, 20523920), (2, 10261960), (4, 5130980), (5, 4104784), (8, 2565490), (10, 2052392), (16, 1282745), (20, 1026196), (40, 513098), (80, 256549), (151, 135920), (302, 67960), (604, 33980), (755, 27184), (1208, 16990), (1510, 13592), (1699, 12080), (2416, 8495), (3020, 6796), (3398, 6040)]