21011031

素因数分解:

$3^2\times {\mathrm{17}}^1\times {\mathrm{89}}^1\times {\mathrm{1543}}^1$

素因数の和:1655

約数の個数: 24

約数和(自身を含む): 32516640

約数和(自身を除く): 11505609

約数列:

[1, 3, 9, 17, 51, 89, 153, 267, 801, 1513, 1543, 4539, 4629, 13617, 13887, 26231, 78693, 137327, 236079, 411981, 1235943, 2334559, 7003677, 21011031]

約数ペア:

[(1, 21011031), (3, 7003677), (9, 2334559), (17, 1235943), (51, 411981), (89, 236079), (153, 137327), (267, 78693), (801, 26231), (1513, 13887), (1543, 13617), (4539, 4629)]