21556143

素因数分解:

$3^2\times 7^1\times {\mathrm{577}}^1\times {\mathrm{593}}^1$

素因数の和:1183

約数の個数: 24

約数和(自身を含む): 35706528

約数和(自身を除く): 14150385

約数列:

[1, 3, 7, 9, 21, 63, 577, 593, 1731, 1779, 4039, 4151, 5193, 5337, 12117, 12453, 36351, 37359, 342161, 1026483, 2395127, 3079449, 7185381, 21556143]

約数ペア:

[(1, 21556143), (3, 7185381), (7, 3079449), (9, 2395127), (21, 1026483), (63, 342161), (577, 37359), (593, 36351), (1731, 12453), (1779, 12117), (4039, 5337), (4151, 5193)]