217770813

素因数分解:

$3^2\times {\mathrm{13}}^1\times {\mathrm{1321}}^1\times {\mathrm{1409}}^1$

素因数の和:2749

約数の個数: 24

約数和(自身を含む): 339251640

約数和(自身を除く): 121480827

約数列:

[1, 3, 9, 13, 39, 117, 1321, 1409, 3963, 4227, 11889, 12681, 17173, 18317, 51519, 54951, 154557, 164853, 1861289, 5583867, 16751601, 24196757, 72590271, 217770813]

約数ペア:

[(1, 217770813), (3, 72590271), (9, 24196757), (13, 16751601), (39, 5583867), (117, 1861289), (1321, 164853), (1409, 154557), (3963, 54951), (4227, 51519), (11889, 18317), (12681, 17173)]