20689155

素因数分解:

$3^3\times 5^1\times {\mathrm{331}}^1\times {\mathrm{463}}^1$

素因数の和:808

約数の個数: 32

約数和(自身を含む): 36971520

約数和(自身を除く): 16282365

約数列:

[1, 3, 5, 9, 15, 27, 45, 135, 331, 463, 993, 1389, 1655, 2315, 2979, 4167, 4965, 6945, 8937, 12501, 14895, 20835, 44685, 62505, 153253, 459759, 766265, 1379277, 2298795, 4137831, 6896385, 20689155]

約数ペア:

[(1, 20689155), (3, 6896385), (5, 4137831), (9, 2298795), (15, 1379277), (27, 766265), (45, 459759), (135, 153253), (331, 62505), (463, 44685), (993, 20835), (1389, 14895), (1655, 12501), (2315, 8937), (2979, 6945), (4167, 4965)]