78939028

素因数分解:

$2^2\times 7^1\times {\mathrm{131}}^1\times {\mathrm{21521}}^1$

素因数の和:21663

約数の個数: 24

約数和(自身を含む): 159090624

約数和(自身を除く): 80151596

約数列:

[1, 2, 4, 7, 14, 28, 131, 262, 524, 917, 1834, 3668, 21521, 43042, 86084, 150647, 301294, 602588, 2819251, 5638502, 11277004, 19734757, 39469514, 78939028]

約数ペア:

[(1, 78939028), (2, 39469514), (4, 19734757), (7, 11277004), (14, 5638502), (28, 2819251), (131, 602588), (262, 301294), (524, 150647), (917, 86084), (1834, 43042), (3668, 21521)]