31191391

素因数分解:

$7^4\times {\mathrm{11}}^1\times {\mathrm{1181}}^1$

素因数の和:1220

約数の個数: 20

約数和(自身を含む): 39729384

約数和(自身を除く): 8537993

約数列:

[1, 7, 11, 49, 77, 343, 539, 1181, 2401, 3773, 8267, 12991, 26411, 57869, 90937, 405083, 636559, 2835581, 4455913, 31191391]

約数ペア:

[(1, 31191391), (7, 4455913), (11, 2835581), (49, 636559), (77, 405083), (343, 90937), (539, 57869), (1181, 26411), (2401, 12991), (3773, 8267)]