21298585

素因数分解:

$5^1\times 7^3\times {\mathrm{11}}^1\times {\mathrm{1129}}^1$

素因数の和:1166

約数の個数: 32

約数和(自身を含む): 32544000

約数和(自身を除く): 11245415

約数列:

[1, 5, 7, 11, 35, 49, 55, 77, 245, 343, 385, 539, 1129, 1715, 2695, 3773, 5645, 7903, 12419, 18865, 39515, 55321, 62095, 86933, 276605, 387247, 434665, 608531, 1936235, 3042655, 4259717, 21298585]

約数ペア:

[(1, 21298585), (5, 4259717), (7, 3042655), (11, 1936235), (35, 608531), (49, 434665), (55, 387247), (77, 276605), (245, 86933), (343, 62095), (385, 55321), (539, 39515), (1129, 18865), (1715, 12419), (2695, 7903), (3773, 5645)]