21128079

素因数分解:

$3^1\times 7^1\times {\mathrm{41}}^1\times {\mathrm{53}}^1\times {\mathrm{463}}^1$

素因数の和:567

約数の個数: 32

約数和(自身を含む): 33675264

約数和(自身を除く): 12547185

約数列:

[1, 3, 7, 21, 41, 53, 123, 159, 287, 371, 463, 861, 1113, 1389, 2173, 3241, 6519, 9723, 15211, 18983, 24539, 45633, 56949, 73617, 132881, 171773, 398643, 515319, 1006099, 3018297, 7042693, 21128079]

約数ペア:

[(1, 21128079), (3, 7042693), (7, 3018297), (21, 1006099), (41, 515319), (53, 398643), (123, 171773), (159, 132881), (287, 73617), (371, 56949), (463, 45633), (861, 24539), (1113, 18983), (1389, 15211), (2173, 9723), (3241, 6519)]