81427255

素因数分解:

$5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{9419}}^1$

素因数の和:9463

約数の個数: 32

約数和(自身を含む): 126604800

約数和(自身を除く): 45177545

約数列:

[1, 5, 7, 13, 19, 35, 65, 91, 95, 133, 247, 455, 665, 1235, 1729, 8645, 9419, 47095, 65933, 122447, 178961, 329665, 612235, 857129, 894805, 1252727, 2326493, 4285645, 6263635, 11632465, 16285451, 81427255]

約数ペア:

[(1, 81427255), (5, 16285451), (7, 11632465), (13, 6263635), (19, 4285645), (35, 2326493), (65, 1252727), (91, 894805), (95, 857129), (133, 612235), (247, 329665), (455, 178961), (665, 122447), (1235, 65933), (1729, 47095), (8645, 9419)]