21765471

素因数分解:

$3^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{61}}^1\times {\mathrm{1307}}^1$

素因数の和:1391

約数の個数: 32

約数和(自身を含む): 36331008

約数和(自身を除く): 14565537

約数列:

[1, 3, 7, 13, 21, 39, 61, 91, 183, 273, 427, 793, 1281, 1307, 2379, 3921, 5551, 9149, 16653, 16991, 27447, 50973, 79727, 118937, 239181, 356811, 558089, 1036451, 1674267, 3109353, 7255157, 21765471]

約数ペア:

[(1, 21765471), (3, 7255157), (7, 3109353), (13, 1674267), (21, 1036451), (39, 558089), (61, 356811), (91, 239181), (183, 118937), (273, 79727), (427, 50973), (793, 27447), (1281, 16991), (1307, 16653), (2379, 9149), (3921, 5551)]