20559160

素因数分解:

$2^3\times 5^1\times {\mathrm{43}}^1\times {\mathrm{11953}}^1$

素因数の和:12007

約数の個数: 32

約数和(自身を含む): 47337840

約数和(自身を除く): 26778680

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 43, 86, 172, 215, 344, 430, 860, 1720, 11953, 23906, 47812, 59765, 95624, 119530, 239060, 478120, 513979, 1027958, 2055916, 2569895, 4111832, 5139790, 10279580, 20559160]

約数ペア:

[(1, 20559160), (2, 10279580), (4, 5139790), (5, 4111832), (8, 2569895), (10, 2055916), (20, 1027958), (40, 513979), (43, 478120), (86, 239060), (172, 119530), (215, 95624), (344, 59765), (430, 47812), (860, 23906), (1720, 11953)]