20901465

素因数分解:

$3^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{35729}}^1$

素因数の和:35753

約数の個数: 24

約数和(自身を含む): 39017160

約数和(自身を除く): 18115695

約数列:

[1, 3, 5, 9, 13, 15, 39, 45, 65, 117, 195, 585, 35729, 107187, 178645, 321561, 464477, 535935, 1393431, 1607805, 2322385, 4180293, 6967155, 20901465]

約数ペア:

[(1, 20901465), (3, 6967155), (5, 4180293), (9, 2322385), (13, 1607805), (15, 1393431), (39, 535935), (45, 464477), (65, 321561), (117, 178645), (195, 107187), (585, 35729)]