19407190

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^2\times {\mathrm{43}}^1\times {\mathrm{373}}^1$

素因数の和:445

約数の個数: 48

約数和(自身を含む): 39395664

約数和(自身を除く): 19988474

約数列:

[1, 2, 5, 10, 11, 22, 43, 55, 86, 110, 121, 215, 242, 373, 430, 473, 605, 746, 946, 1210, 1865, 2365, 3730, 4103, 4730, 5203, 8206, 10406, 16039, 20515, 26015, 32078, 41030, 45133, 52030, 80195, 90266, 160390, 176429, 225665, 352858, 451330, 882145, 1764290, 1940719, 3881438, 9703595, 19407190]

約数ペア:

[(1, 19407190), (2, 9703595), (5, 3881438), (10, 1940719), (11, 1764290), (22, 882145), (43, 451330), (55, 352858), (86, 225665), (110, 176429), (121, 160390), (215, 90266), (242, 80195), (373, 52030), (430, 45133), (473, 41030), (605, 32078), (746, 26015), (946, 20515), (1210, 16039), (1865, 10406), (2365, 8206), (3730, 5203), (4103, 4730)]