21467395

素因数分解:

$5^1\times {\mathrm{23}}^1\times {\mathrm{29}}^1\times {\mathrm{41}}^1\times {\mathrm{157}}^1$

素因数の和:255

約数の個数: 32

約数和(自身を含む): 28667520

約数和(自身を除く): 7200125

約数列:

[1, 5, 23, 29, 41, 115, 145, 157, 205, 667, 785, 943, 1189, 3335, 3611, 4553, 4715, 5945, 6437, 18055, 22765, 27347, 32185, 104719, 136735, 148051, 186673, 523595, 740255, 933365, 4293479, 21467395]

約数ペア:

[(1, 21467395), (5, 4293479), (23, 933365), (29, 740255), (41, 523595), (115, 186673), (145, 148051), (157, 136735), (205, 104719), (667, 32185), (785, 27347), (943, 22765), (1189, 18055), (3335, 6437), (3611, 5945), (4553, 4715)]