21315511161

素因数分解:

$3^2\times 7^1\times {\mathrm{15817}}^1\times {\mathrm{21391}}^1$

素因数の和:37221

約数の個数: 24

約数和(自身を含む): 35191380224

約数和(自身を除く): 13875869063

約数列:

[1, 3, 7, 9, 21, 63, 15817, 21391, 47451, 64173, 110719, 142353, 149737, 192519, 332157, 449211, 996471, 1347633, 338341447, 1015024341, 2368390129, 3045073023, 7105170387, 21315511161]

約数ペア:

[(1, 21315511161), (3, 7105170387), (7, 3045073023), (9, 2368390129), (21, 1015024341), (63, 338341447), (15817, 1347633), (21391, 996471), (47451, 449211), (64173, 332157), (110719, 192519), (142353, 149737)]