21730775

素因数分解:

$5^2\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{4159}}^1$

素因数の和:4199

約数の個数: 24

約数和(自身を含む): 30950400

約数和(自身を除く): 9219625

約数列:

[1, 5, 11, 19, 25, 55, 95, 209, 275, 475, 1045, 4159, 5225, 20795, 45749, 79021, 103975, 228745, 395105, 869231, 1143725, 1975525, 4346155, 21730775]

約数ペア:

[(1, 21730775), (5, 4346155), (11, 1975525), (19, 1143725), (25, 869231), (55, 395105), (95, 228745), (209, 103975), (275, 79021), (475, 45749), (1045, 20795), (4159, 5225)]