78721775

素因数分解:

$5^2\times {\mathrm{11}}^1\times {\mathrm{293}}^1\times {\mathrm{977}}^1$

素因数の和:1291

約数の個数: 24

約数和(自身を含む): 106961904

約数和(自身を除く): 28240129

約数列:

[1, 5, 11, 25, 55, 275, 293, 977, 1465, 3223, 4885, 7325, 10747, 16115, 24425, 53735, 80575, 268675, 286261, 1431305, 3148871, 7156525, 15744355, 78721775]

約数ペア:

[(1, 78721775), (5, 15744355), (11, 7156525), (25, 3148871), (55, 1431305), (275, 286261), (293, 268675), (977, 80575), (1465, 53735), (3223, 24425), (4885, 16115), (7325, 10747)]