20539221

素因数分解:

$3^1\times {\mathrm{29}}^1\times {\mathrm{307}}^1\times {\mathrm{769}}^1$

素因数の和:1108

約数の個数: 16

約数和(自身を含む): 28459200

約数和(自身を除く): 7919979

約数列:

[1, 3, 29, 87, 307, 769, 921, 2307, 8903, 22301, 26709, 66903, 236083, 708249, 6846407, 20539221]

約数ペア:

[(1, 20539221), (3, 6846407), (29, 708249), (87, 236083), (307, 66903), (769, 26709), (921, 22301), (2307, 8903)]