21331257

素因数分解:

$3^1\times {\mathrm{73}}^1\times {\mathrm{257}}^1\times {\mathrm{379}}^1$

素因数の和:712

約数の個数: 16

約数和(自身を含む): 29019840

約数和(自身を除く): 7688583

約数列:

[1, 3, 73, 219, 257, 379, 771, 1137, 18761, 27667, 56283, 83001, 97403, 292209, 7110419, 21331257]

約数ペア:

[(1, 21331257), (3, 7110419), (73, 292209), (219, 97403), (257, 83001), (379, 56283), (771, 27667), (1137, 18761)]