31044280

素因数分解:

$2^3\times 5^1\times {\mathrm{43}}^1\times {\mathrm{18049}}^1$

素因数の和:18103

約数の個数: 32

約数和(自身を含む): 71478000

約数和(自身を除く): 40433720

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 43, 86, 172, 215, 344, 430, 860, 1720, 18049, 36098, 72196, 90245, 144392, 180490, 360980, 721960, 776107, 1552214, 3104428, 3880535, 6208856, 7761070, 15522140, 31044280]

約数ペア:

[(1, 31044280), (2, 15522140), (4, 7761070), (5, 6208856), (8, 3880535), (10, 3104428), (20, 1552214), (40, 776107), (43, 721960), (86, 360980), (172, 180490), (215, 144392), (344, 90245), (430, 72196), (860, 36098), (1720, 18049)]