21304689

素因数分解:

$3^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{83}}^1\times {\mathrm{719}}^1$

素因数の和:829

約数の個数: 32

約数和(自身を含む): 34836480

約数和(自身を除く): 13531791

約数列:

[1, 3, 7, 17, 21, 51, 83, 119, 249, 357, 581, 719, 1411, 1743, 2157, 4233, 5033, 9877, 12223, 15099, 29631, 36669, 59677, 85561, 179031, 256683, 417739, 1014509, 1253217, 3043527, 7101563, 21304689]

約数ペア:

[(1, 21304689), (3, 7101563), (7, 3043527), (17, 1253217), (21, 1014509), (51, 417739), (83, 256683), (119, 179031), (249, 85561), (357, 59677), (581, 36669), (719, 29631), (1411, 15099), (1743, 12223), (2157, 9877), (4233, 5033)]