21278013

素因数分解:

$3^1\times {\mathrm{23}}^1\times {\mathrm{113}}^1\times {\mathrm{2729}}^1$

素因数の和:2868

約数の個数: 16

約数和(自身を含む): 29877120

約数和(自身を除く): 8599107

約数列:

[1, 3, 23, 69, 113, 339, 2599, 2729, 7797, 8187, 62767, 188301, 308377, 925131, 7092671, 21278013]

約数ペア:

[(1, 21278013), (3, 7092671), (23, 925131), (69, 308377), (113, 188301), (339, 62767), (2599, 8187), (2729, 7797)]