261080781

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{139}}^1\times {\mathrm{2833}}^1$

素因数の和:3005

約数の個数: 32

約数和(自身を含む): 399934080

約数和(自身を除く): 138853299

約数列:

[1, 3, 13, 17, 39, 51, 139, 221, 417, 663, 1807, 2363, 2833, 5421, 7089, 8499, 30719, 36829, 48161, 92157, 110487, 144483, 393787, 626093, 1181361, 1878279, 5119231, 6694379, 15357693, 20083137, 87026927, 261080781]

約数ペア:

[(1, 261080781), (3, 87026927), (13, 20083137), (17, 15357693), (39, 6694379), (51, 5119231), (139, 1878279), (221, 1181361), (417, 626093), (663, 393787), (1807, 144483), (2363, 110487), (2833, 92157), (5421, 48161), (7089, 36829), (8499, 30719)]