20123687969

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{641}}^1\times {\mathrm{407717}}^1$

素因数の和:408376

約数の個数: 16

約数和(自身を含む): 25128475776

約数和(自身を除く): 5004787807

約数列:

[1, 7, 11, 77, 641, 4487, 7051, 49357, 407717, 2854019, 4484887, 31394209, 261346597, 1829426179, 2874812567, 20123687969]

約数ペア:

[(1, 20123687969), (7, 2874812567), (11, 1829426179), (77, 261346597), (641, 31394209), (4487, 4484887), (7051, 2854019), (49357, 407717)]