21871413

素因数分解:

$3^2\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{67}}^1\times {\mathrm{83}}^1$

素因数の和:198

約数の個数: 48

約数和(自身を含む): 35642880

約数和(自身を除く): 13771467

約数列:

[1, 3, 9, 19, 23, 57, 67, 69, 83, 171, 201, 207, 249, 437, 603, 747, 1273, 1311, 1541, 1577, 1909, 3819, 3933, 4623, 4731, 5561, 5727, 11457, 13869, 14193, 16683, 17181, 29279, 36271, 50049, 87837, 105659, 108813, 127903, 263511, 316977, 326439, 383709, 950931, 1151127, 2430157, 7290471, 21871413]

約数ペア:

[(1, 21871413), (3, 7290471), (9, 2430157), (19, 1151127), (23, 950931), (57, 383709), (67, 326439), (69, 316977), (83, 263511), (171, 127903), (201, 108813), (207, 105659), (249, 87837), (437, 50049), (603, 36271), (747, 29279), (1273, 17181), (1311, 16683), (1541, 14193), (1577, 13869), (1909, 11457), (3819, 5727), (3933, 5561), (4623, 4731)]