21058089

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{43}}^1\times {\mathrm{433}}^1$

素因数の和:521

約数の個数: 32

約数和(自身を含む): 32081280

約数和(自身を除く): 11023191

約数列:

[1, 3, 13, 29, 39, 43, 87, 129, 377, 433, 559, 1131, 1247, 1299, 1677, 3741, 5629, 12557, 16211, 16887, 18619, 37671, 48633, 55857, 163241, 242047, 489723, 539951, 726141, 1619853, 7019363, 21058089]

約数ペア:

[(1, 21058089), (3, 7019363), (13, 1619853), (29, 726141), (39, 539951), (43, 489723), (87, 242047), (129, 163241), (377, 55857), (433, 48633), (559, 37671), (1131, 18619), (1247, 16887), (1299, 16211), (1677, 12557), (3741, 5629)]