21772821

素因数分解:

$3^1\times 7^1\times {\mathrm{139}}^1\times {\mathrm{7459}}^1$

素因数の和:7608

約数の個数: 16

約数和(自身を含む): 33420800

約数和(自身を除く): 11647979

約数列:

[1, 3, 7, 21, 139, 417, 973, 2919, 7459, 22377, 52213, 156639, 1036801, 3110403, 7257607, 21772821]

約数ペア:

[(1, 21772821), (3, 7257607), (7, 3110403), (21, 1036801), (139, 156639), (417, 52213), (973, 22377), (2919, 7459)]