778979721

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{67}}^1\times {\mathrm{241}}^1\times {\mathrm{1237}}^1$

素因数の和:1561

約数の個数: 32

約数和(自身を含む): 1140861568

約数和(自身を除く): 361881847

約数列:

[1, 3, 13, 39, 67, 201, 241, 723, 871, 1237, 2613, 3133, 3711, 9399, 16081, 16147, 48243, 48441, 82879, 209911, 248637, 298117, 629733, 894351, 1077427, 3232281, 3875521, 11626563, 19973839, 59921517, 259659907, 778979721]

約数ペア:

[(1, 778979721), (3, 259659907), (13, 59921517), (39, 19973839), (67, 11626563), (201, 3875521), (241, 3232281), (723, 1077427), (871, 894351), (1237, 629733), (2613, 298117), (3133, 248637), (3711, 209911), (9399, 82879), (16081, 48441), (16147, 48243)]