247195881

素因数分解:

$3^6\times {\mathrm{23}}^2\times {\mathrm{641}}^1$

素因数の和:705

約数の個数: 42

約数和(自身を含む): 388043418

約数和(自身を除く): 140847537

約数列:

[1, 3, 9, 23, 27, 69, 81, 207, 243, 529, 621, 641, 729, 1587, 1863, 1923, 4761, 5589, 5769, 14283, 14743, 16767, 17307, 42849, 44229, 51921, 128547, 132687, 155763, 339089, 385641, 398061, 467289, 1017267, 1194183, 3051801, 3582549, 9155403, 10747647, 27466209, 82398627, 247195881]

約数ペア:

[(1, 247195881), (3, 82398627), (9, 27466209), (23, 10747647), (27, 9155403), (69, 3582549), (81, 3051801), (207, 1194183), (243, 1017267), (529, 467289), (621, 398061), (641, 385641), (729, 339089), (1587, 155763), (1863, 132687), (1923, 128547), (4761, 51921), (5589, 44229), (5769, 42849), (14283, 17307), (14743, 16767)]