21287109

素因数分解:

$3^1\times {\mathrm{61}}^1\times {\mathrm{89}}^1\times {\mathrm{1307}}^1$

素因数の和:1460

約数の個数: 16

約数和(自身を含む): 29194560

約数和(自身を除く): 7907451

約数列:

[1, 3, 61, 89, 183, 267, 1307, 3921, 5429, 16287, 79727, 116323, 239181, 348969, 7095703, 21287109]

約数ペア:

[(1, 21287109), (3, 7095703), (61, 348969), (89, 239181), (183, 116323), (267, 79727), (1307, 16287), (3921, 5429)]