21442491

素因数分解:

$3^2\times 7^1\times {\mathrm{17}}^1\times {\mathrm{20021}}^1$

素因数の和:20051

約数の個数: 24

約数和(自身を含む): 37481184

約数和(自身を除く): 16038693

約数列:

[1, 3, 7, 9, 17, 21, 51, 63, 119, 153, 357, 1071, 20021, 60063, 140147, 180189, 340357, 420441, 1021071, 1261323, 2382499, 3063213, 7147497, 21442491]

約数ペア:

[(1, 21442491), (3, 7147497), (7, 3063213), (9, 2382499), (17, 1261323), (21, 1021071), (51, 420441), (63, 340357), (119, 180189), (153, 140147), (357, 60063), (1071, 20021)]