20686005

素因数分解:

$3^2\times 5^1\times {\mathrm{103}}^1\times {\mathrm{4463}}^1$

素因数の和:4577

約数の個数: 24

約数和(自身を含む): 36211968

約数和(自身を除く): 15525963

約数列:

[1, 3, 5, 9, 15, 45, 103, 309, 515, 927, 1545, 4463, 4635, 13389, 22315, 40167, 66945, 200835, 459689, 1379067, 2298445, 4137201, 6895335, 20686005]

約数ペア:

[(1, 20686005), (3, 6895335), (5, 4137201), (9, 2298445), (15, 1379067), (45, 459689), (103, 200835), (309, 66945), (515, 40167), (927, 22315), (1545, 13389), (4463, 4635)]