91398867

素因数分解:

$3^1\times 7^4\times {\mathrm{12689}}^1$

素因数の和:12720

約数の個数: 20

約数和(自身を含む): 142178760

約数和(自身を除く): 50779893

約数列:

[1, 3, 7, 21, 49, 147, 343, 1029, 2401, 7203, 12689, 38067, 88823, 266469, 621761, 1865283, 4352327, 13056981, 30466289, 91398867]

約数ペア:

[(1, 91398867), (3, 30466289), (7, 13056981), (21, 4352327), (49, 1865283), (147, 621761), (343, 266469), (1029, 88823), (2401, 38067), (7203, 12689)]