21742480

素因数分解:

$2^4\times 5^1\times {\mathrm{463}}^1\times {\mathrm{587}}^1$

素因数の和:1063

約数の個数: 40

約数和(自身を含む): 50746752

約数和(自身を除く): 29004272

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 463, 587, 926, 1174, 1852, 2315, 2348, 2935, 3704, 4630, 4696, 5870, 7408, 9260, 9392, 11740, 18520, 23480, 37040, 46960, 271781, 543562, 1087124, 1358905, 2174248, 2717810, 4348496, 5435620, 10871240, 21742480]

約数ペア:

[(1, 21742480), (2, 10871240), (4, 5435620), (5, 4348496), (8, 2717810), (10, 2174248), (16, 1358905), (20, 1087124), (40, 543562), (80, 271781), (463, 46960), (587, 37040), (926, 23480), (1174, 18520), (1852, 11740), (2315, 9392), (2348, 9260), (2935, 7408), (3704, 5870), (4630, 4696)]