20215791

素因数分解:

$3^3\times {\mathrm{19}}^1\times {\mathrm{157}}^1\times {\mathrm{251}}^1$

素因数の和:436

約数の個数: 32

約数和(自身を含む): 31852800

約数和(自身を除く): 11637009

約数列:

[1, 3, 9, 19, 27, 57, 157, 171, 251, 471, 513, 753, 1413, 2259, 2983, 4239, 4769, 6777, 8949, 14307, 26847, 39407, 42921, 80541, 118221, 128763, 354663, 748733, 1063989, 2246199, 6738597, 20215791]

約数ペア:

[(1, 20215791), (3, 6738597), (9, 2246199), (19, 1063989), (27, 748733), (57, 354663), (157, 128763), (171, 118221), (251, 80541), (471, 42921), (513, 39407), (753, 26847), (1413, 14307), (2259, 8949), (2983, 6777), (4239, 4769)]