21212510

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^2\times {\mathrm{47}}^1\times {\mathrm{373}}^1$

素因数の和:449

約数の個数: 48

約数和(自身を含む): 42977088

約数和(自身を除く): 21764578

約数列:

[1, 2, 5, 10, 11, 22, 47, 55, 94, 110, 121, 235, 242, 373, 470, 517, 605, 746, 1034, 1210, 1865, 2585, 3730, 4103, 5170, 5687, 8206, 11374, 17531, 20515, 28435, 35062, 41030, 45133, 56870, 87655, 90266, 175310, 192841, 225665, 385682, 451330, 964205, 1928410, 2121251, 4242502, 10606255, 21212510]

約数ペア:

[(1, 21212510), (2, 10606255), (5, 4242502), (10, 2121251), (11, 1928410), (22, 964205), (47, 451330), (55, 385682), (94, 225665), (110, 192841), (121, 175310), (235, 90266), (242, 87655), (373, 56870), (470, 45133), (517, 41030), (605, 35062), (746, 28435), (1034, 20515), (1210, 17531), (1865, 11374), (2585, 8206), (3730, 5687), (4103, 5170)]