20885553

素因数分解:

$3^3\times {\mathrm{13}}^1\times {\mathrm{157}}^1\times {\mathrm{379}}^1$

素因数の和:558

約数の個数: 32

約数和(自身を含む): 33622400

約数和(自身を除く): 12736847

約数列:

[1, 3, 9, 13, 27, 39, 117, 157, 351, 379, 471, 1137, 1413, 2041, 3411, 4239, 4927, 6123, 10233, 14781, 18369, 44343, 55107, 59503, 133029, 178509, 535527, 773539, 1606581, 2320617, 6961851, 20885553]

約数ペア:

[(1, 20885553), (3, 6961851), (9, 2320617), (13, 1606581), (27, 773539), (39, 535527), (117, 178509), (157, 133029), (351, 59503), (379, 55107), (471, 44343), (1137, 18369), (1413, 14781), (2041, 10233), (3411, 6123), (4239, 4927)]