20301281

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{1193}}^1$

素因数の和:1241

約数の個数: 32

約数和(自身を含む): 28885248

約数和(自身を除く): 8583967

約数列:

[1, 7, 11, 13, 17, 77, 91, 119, 143, 187, 221, 1001, 1193, 1309, 1547, 2431, 8351, 13123, 15509, 17017, 20281, 91861, 108563, 141967, 170599, 223091, 263653, 1194193, 1561637, 1845571, 2900183, 20301281]

約数ペア:

[(1, 20301281), (7, 2900183), (11, 1845571), (13, 1561637), (17, 1194193), (77, 263653), (91, 223091), (119, 170599), (143, 141967), (187, 108563), (221, 91861), (1001, 20281), (1193, 17017), (1309, 15509), (1547, 13123), (2431, 8351)]