218699720

素因数分解:

$2^3\times 5^1\times {\mathrm{43}}^2\times {\mathrm{2957}}^1$

素因数の和:3054

約数の個数: 48

約数和(自身を含む): 503954460

約数和(自身を除く): 285254740

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 43, 86, 172, 215, 344, 430, 860, 1720, 1849, 2957, 3698, 5914, 7396, 9245, 11828, 14785, 14792, 18490, 23656, 29570, 36980, 59140, 73960, 118280, 127151, 254302, 508604, 635755, 1017208, 1271510, 2543020, 5086040, 5467493, 10934986, 21869972, 27337465, 43739944, 54674930, 109349860, 218699720]

約数ペア:

[(1, 218699720), (2, 109349860), (4, 54674930), (5, 43739944), (8, 27337465), (10, 21869972), (20, 10934986), (40, 5467493), (43, 5086040), (86, 2543020), (172, 1271510), (215, 1017208), (344, 635755), (430, 508604), (860, 254302), (1720, 127151), (1849, 118280), (2957, 73960), (3698, 59140), (5914, 36980), (7396, 29570), (9245, 23656), (11828, 18490), (14785, 14792)]