28387880

素因数分解:

$2^3\times 5^1\times {\mathrm{37}}^1\times {\mathrm{19181}}^1$

素因数の和:19229

約数の個数: 32

約数和(自身を含む): 65602440

約数和(自身を除く): 37214560

約数列:

[1, 2, 4, 5, 8, 10, 20, 37, 40, 74, 148, 185, 296, 370, 740, 1480, 19181, 38362, 76724, 95905, 153448, 191810, 383620, 709697, 767240, 1419394, 2838788, 3548485, 5677576, 7096970, 14193940, 28387880]

約数ペア:

[(1, 28387880), (2, 14193940), (4, 7096970), (5, 5677576), (8, 3548485), (10, 2838788), (20, 1419394), (37, 767240), (40, 709697), (74, 383620), (148, 191810), (185, 153448), (296, 95905), (370, 76724), (740, 38362), (1480, 19181)]