21287581

素因数分解:

$7^1\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{6959}}^1$

素因数の和:7008

約数の個数: 16

約数和(自身を含む): 26726400

約数和(自身を除く): 5438819

約数列:

[1, 7, 19, 23, 133, 161, 437, 3059, 6959, 48713, 132221, 160057, 925547, 1120399, 3041083, 21287581]

約数ペア:

[(1, 21287581), (7, 3041083), (19, 1120399), (23, 925547), (133, 160057), (161, 132221), (437, 48713), (3059, 6959)]