19939121675

素因数分解:

$5^2\times {\mathrm{11}}^1\times {\mathrm{89}}^1\times {\mathrm{157}}^1\times {\mathrm{5189}}^1$

素因数の和:5456

約数の個数: 48

約数和(自身を含む): 27454269600

約数和(自身を除く): 7515147925

約数列:

[1, 5, 11, 25, 55, 89, 157, 275, 445, 785, 979, 1727, 2225, 3925, 4895, 5189, 8635, 13973, 24475, 25945, 43175, 57079, 69865, 129725, 153703, 285395, 349325, 461821, 768515, 814673, 1426975, 2309105, 3842575, 4073365, 5080031, 8961403, 11545525, 20366825, 25400155, 44807015, 72505897, 127000775, 224035075, 362529485, 797564867, 1812647425, 3987824335, 19939121675]

約数ペア:

[(1, 19939121675), (5, 3987824335), (11, 1812647425), (25, 797564867), (55, 362529485), (89, 224035075), (157, 127000775), (275, 72505897), (445, 44807015), (785, 25400155), (979, 20366825), (1727, 11545525), (2225, 8961403), (3925, 5080031), (4895, 4073365), (5189, 3842575), (8635, 2309105), (13973, 1426975), (24475, 814673), (25945, 768515), (43175, 461821), (57079, 349325), (69865, 285395), (129725, 153703)]