21254691

素因数分解:

$3^1\times {\mathrm{23}}^2\times {\mathrm{59}}^1\times {\mathrm{227}}^1$

素因数の和:335

約数の個数: 24

約数和(自身を含む): 30260160

約数和(自身を除く): 9005469

約数列:

[1, 3, 23, 59, 69, 177, 227, 529, 681, 1357, 1587, 4071, 5221, 13393, 15663, 31211, 40179, 93633, 120083, 308039, 360249, 924117, 7084897, 21254691]

約数ペア:

[(1, 21254691), (3, 7084897), (23, 924117), (59, 360249), (69, 308039), (177, 120083), (227, 93633), (529, 40179), (681, 31211), (1357, 15663), (1587, 13393), (4071, 5221)]