20939380

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{13597}}^1$

素因数の和:13624

約数の個数: 48

約数和(自身を含む): 54827136

約数和(自身を除く): 33887756

約数列:

[1, 2, 4, 5, 7, 10, 11, 14, 20, 22, 28, 35, 44, 55, 70, 77, 110, 140, 154, 220, 308, 385, 770, 1540, 13597, 27194, 54388, 67985, 95179, 135970, 149567, 190358, 271940, 299134, 380716, 475895, 598268, 747835, 951790, 1046969, 1495670, 1903580, 2093938, 2991340, 4187876, 5234845, 10469690, 20939380]

約数ペア:

[(1, 20939380), (2, 10469690), (4, 5234845), (5, 4187876), (7, 2991340), (10, 2093938), (11, 1903580), (14, 1495670), (20, 1046969), (22, 951790), (28, 747835), (35, 598268), (44, 475895), (55, 380716), (70, 299134), (77, 271940), (110, 190358), (140, 149567), (154, 135970), (220, 95179), (308, 67985), (385, 54388), (770, 27194), (1540, 13597)]