20953527

素因数分解:

$3^1\times 7^4\times {\mathrm{2909}}^1$

素因数の和:2940

約数の個数: 20

約数和(自身を含む): 32603640

約数和(自身を除く): 11650113

約数列:

[1, 3, 7, 21, 49, 147, 343, 1029, 2401, 2909, 7203, 8727, 20363, 61089, 142541, 427623, 997787, 2993361, 6984509, 20953527]

約数ペア:

[(1, 20953527), (3, 6984509), (7, 2993361), (21, 997787), (49, 427623), (147, 142541), (343, 61089), (1029, 20363), (2401, 8727), (2909, 7203)]