221346307

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{199}}^1\times {\mathrm{719}}^1$

素因数の和:955

約数の個数: 32

約数和(自身を含む): 290304000

約数和(自身を除く): 68957693

約数列:

[1, 7, 13, 17, 91, 119, 199, 221, 719, 1393, 1547, 2587, 3383, 5033, 9347, 12223, 18109, 23681, 43979, 65429, 85561, 143081, 158899, 307853, 1001567, 1112293, 1860053, 2432377, 13020371, 17026639, 31620901, 221346307]

約数ペア:

[(1, 221346307), (7, 31620901), (13, 17026639), (17, 13020371), (91, 2432377), (119, 1860053), (199, 1112293), (221, 1001567), (719, 307853), (1393, 158899), (1547, 143081), (2587, 85561), (3383, 65429), (5033, 43979), (9347, 23681), (12223, 18109)]