21211311

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{523}}^1\times {\mathrm{1229}}^1$

素因数の和:1766

約数の個数: 16

約数和(自身を含む): 30936960

約数和(自身を除く): 9725649

約数列:

[1, 3, 11, 33, 523, 1229, 1569, 3687, 5753, 13519, 17259, 40557, 642767, 1928301, 7070437, 21211311]

約数ペア:

[(1, 21211311), (3, 7070437), (11, 1928301), (33, 642767), (523, 40557), (1229, 17259), (1569, 13519), (3687, 5753)]