21316657

素因数分解:

${\mathrm{17}}^1\times {\mathrm{73}}^1\times {\mathrm{89}}^1\times {\mathrm{193}}^1$

素因数の和:372

約数の個数: 16

約数和(自身を含む): 23256720

約数和(自身を除く): 1940063

約数列:

[1, 17, 73, 89, 193, 1241, 1513, 3281, 6497, 14089, 17177, 110449, 239513, 292009, 1253921, 21316657]

約数ペア:

[(1, 21316657), (17, 1253921), (73, 292009), (89, 239513), (193, 110449), (1241, 17177), (1513, 14089), (3281, 6497)]