77978817

素因数分解:

$3^2\times 7^1\times {\mathrm{991}}^1\times {\mathrm{1249}}^1$

素因数の和:2253

約数の個数: 24

約数和(自身を含む): 128960000

約数和(自身を除く): 50981183

約数列:

[1, 3, 7, 9, 21, 63, 991, 1249, 2973, 3747, 6937, 8743, 8919, 11241, 20811, 26229, 62433, 78687, 1237759, 3713277, 8664313, 11139831, 25992939, 77978817]

約数ペア:

[(1, 77978817), (3, 25992939), (7, 11139831), (9, 8664313), (21, 3713277), (63, 1237759), (991, 78687), (1249, 62433), (2973, 26229), (3747, 20811), (6937, 11241), (8743, 8919)]