21330407

素因数分解:

$7^1\times {\mathrm{19}}^2\times {\mathrm{23}}^1\times {\mathrm{367}}^1$

素因数の和:435

約数の個数: 24

約数和(自身を含む): 26919936

約数和(自身を除く): 5589529

約数列:

[1, 7, 19, 23, 133, 161, 361, 367, 437, 2527, 2569, 3059, 6973, 8303, 8441, 48811, 58121, 59087, 132487, 160379, 927409, 1122653, 3047201, 21330407]

約数ペア:

[(1, 21330407), (7, 3047201), (19, 1122653), (23, 927409), (133, 160379), (161, 132487), (361, 59087), (367, 58121), (437, 48811), (2527, 8441), (2569, 8303), (3059, 6973)]