19787481505

素因数分解:

$5^1\times {\mathrm{11}}^2\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{55529}}^1$

素因数の和:55606

約数の個数: 48

約数和(自身を含む): 28360281600

約数和(自身を除く): 8572800095

約数列:

[1, 5, 11, 19, 31, 55, 95, 121, 155, 209, 341, 589, 605, 1045, 1705, 2299, 2945, 3751, 6479, 11495, 18755, 32395, 55529, 71269, 277645, 356345, 610819, 1055051, 1721399, 3054095, 5275255, 6719009, 8606995, 11605561, 18935389, 32706581, 33595045, 58027805, 94676945, 127661171, 163532905, 208289279, 359772391, 638305855, 1041446395, 1798861955, 3957496301, 19787481505]

約数ペア:

[(1, 19787481505), (5, 3957496301), (11, 1798861955), (19, 1041446395), (31, 638305855), (55, 359772391), (95, 208289279), (121, 163532905), (155, 127661171), (209, 94676945), (341, 58027805), (589, 33595045), (605, 32706581), (1045, 18935389), (1705, 11605561), (2299, 8606995), (2945, 6719009), (3751, 5275255), (6479, 3054095), (11495, 1721399), (18755, 1055051), (32395, 610819), (55529, 356345), (71269, 277645)]