20838928

素因数分解:

$2^4\times {\mathrm{11}}^1\times {\mathrm{167}}^1\times {\mathrm{709}}^1$

素因数の和:895

約数の個数: 40

約数和(自身を含む): 44372160

約数和(自身を除く): 23533232

約数列:

[1, 2, 4, 8, 11, 16, 22, 44, 88, 167, 176, 334, 668, 709, 1336, 1418, 1837, 2672, 2836, 3674, 5672, 7348, 7799, 11344, 14696, 15598, 29392, 31196, 62392, 118403, 124784, 236806, 473612, 947224, 1302433, 1894448, 2604866, 5209732, 10419464, 20838928]

約数ペア:

[(1, 20838928), (2, 10419464), (4, 5209732), (8, 2604866), (11, 1894448), (16, 1302433), (22, 947224), (44, 473612), (88, 236806), (167, 124784), (176, 118403), (334, 62392), (668, 31196), (709, 29392), (1336, 15598), (1418, 14696), (1837, 11344), (2672, 7799), (2836, 7348), (3674, 5672)]