28200705

素因数分解:

$3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{47}}^1\times {\mathrm{181}}^1$

素因数の和:266

約数の個数: 64

約数和(自身を含む): 52835328

約数和(自身を除く): 24634623

約数列:

[1, 3, 5, 13, 15, 17, 39, 47, 51, 65, 85, 141, 181, 195, 221, 235, 255, 543, 611, 663, 705, 799, 905, 1105, 1833, 2353, 2397, 2715, 3055, 3077, 3315, 3995, 7059, 8507, 9165, 9231, 10387, 11765, 11985, 15385, 25521, 31161, 35295, 40001, 42535, 46155, 51935, 110591, 120003, 127605, 144619, 155805, 200005, 331773, 433857, 552955, 600015, 723095, 1658865, 1880047, 2169285, 5640141, 9400235, 28200705]

約数ペア:

[(1, 28200705), (3, 9400235), (5, 5640141), (13, 2169285), (15, 1880047), (17, 1658865), (39, 723095), (47, 600015), (51, 552955), (65, 433857), (85, 331773), (141, 200005), (181, 155805), (195, 144619), (221, 127605), (235, 120003), (255, 110591), (543, 51935), (611, 46155), (663, 42535), (705, 40001), (799, 35295), (905, 31161), (1105, 25521), (1833, 15385), (2353, 11985), (2397, 11765), (2715, 10387), (3055, 9231), (3077, 9165), (3315, 8507), (3995, 7059)]