20577285

素因数分解:

$3^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{41}}^1\times {\mathrm{587}}^1$

素因数の和:658

約数の個数: 48

約数和(自身を含む): 38525760

約数和(自身を除く): 17948475

約数列:

[1, 3, 5, 9, 15, 19, 41, 45, 57, 95, 123, 171, 205, 285, 369, 587, 615, 779, 855, 1761, 1845, 2337, 2935, 3895, 5283, 7011, 8805, 11153, 11685, 24067, 26415, 33459, 35055, 55765, 72201, 100377, 120335, 167295, 216603, 361005, 457273, 501885, 1083015, 1371819, 2286365, 4115457, 6859095, 20577285]

約数ペア:

[(1, 20577285), (3, 6859095), (5, 4115457), (9, 2286365), (15, 1371819), (19, 1083015), (41, 501885), (45, 457273), (57, 361005), (95, 216603), (123, 167295), (171, 120335), (205, 100377), (285, 72201), (369, 55765), (587, 35055), (615, 33459), (779, 26415), (855, 24067), (1761, 11685), (1845, 11153), (2337, 8805), (2935, 7011), (3895, 5283)]