21508389

素因数分解:

$3^3\times 7^1\times {\mathrm{31}}^1\times {\mathrm{3671}}^1$

素因数の和:3718

約数の個数: 32

約数和(自身を含む): 37601280

約数和(自身を除く): 16092891

約数列:

[1, 3, 7, 9, 21, 27, 31, 63, 93, 189, 217, 279, 651, 837, 1953, 3671, 5859, 11013, 25697, 33039, 77091, 99117, 113801, 231273, 341403, 693819, 796607, 1024209, 2389821, 3072627, 7169463, 21508389]

約数ペア:

[(1, 21508389), (3, 7169463), (7, 3072627), (9, 2389821), (21, 1024209), (27, 796607), (31, 693819), (63, 341403), (93, 231273), (189, 113801), (217, 99117), (279, 77091), (651, 33039), (837, 25697), (1953, 11013), (3671, 5859)]