78878139

素因数分解:

$3^1\times {\mathrm{19}}^2\times {\mathrm{173}}^1\times {\mathrm{421}}^1$

素因数の和:635

約数の個数: 24

約数和(自身を含む): 111904272

約数和(自身を除く): 33026133

約数列:

[1, 3, 19, 57, 173, 361, 421, 519, 1083, 1263, 3287, 7999, 9861, 23997, 62453, 72833, 151981, 187359, 218499, 455943, 1383827, 4151481, 26292713, 78878139]

約数ペア:

[(1, 78878139), (3, 26292713), (19, 4151481), (57, 1383827), (173, 455943), (361, 218499), (421, 187359), (519, 151981), (1083, 72833), (1263, 62453), (3287, 23997), (7999, 9861)]