20899715

素因数分解:

$5^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{12941}}^1$

素因数の和:12982

約数の個数: 16

約数和(自身を含む): 27954720

約数和(自身を除く): 7055005

約数列:

[1, 5, 17, 19, 85, 95, 323, 1615, 12941, 64705, 219997, 245879, 1099985, 1229395, 4179943, 20899715]

約数ペア:

[(1, 20899715), (5, 4179943), (17, 1229395), (19, 1099985), (85, 245879), (95, 219997), (323, 64705), (1615, 12941)]