21660429

素因数分解:

$3^1\times 7^1\times {\mathrm{37}}^1\times {\mathrm{61}}^1\times {\mathrm{457}}^1$

素因数の和:565

約数の個数: 32

約数和(自身を含む): 34529536

約数和(自身を除く): 12869107

約数列:

[1, 3, 7, 21, 37, 61, 111, 183, 259, 427, 457, 777, 1281, 1371, 2257, 3199, 6771, 9597, 15799, 16909, 27877, 47397, 50727, 83631, 118363, 195139, 355089, 585417, 1031449, 3094347, 7220143, 21660429]

約数ペア:

[(1, 21660429), (3, 7220143), (7, 3094347), (21, 1031449), (37, 585417), (61, 355089), (111, 195139), (183, 118363), (259, 83631), (427, 50727), (457, 47397), (777, 27877), (1281, 16909), (1371, 15799), (2257, 9597), (3199, 6771)]