20940039

素因数分解:

$3^5\times {\mathrm{17}}^1\times {\mathrm{37}}^1\times {\mathrm{137}}^1$

素因数の和:206

約数の個数: 48

約数和(自身を含む): 34358688

約数和(自身を除く): 13418649

約数列:

[1, 3, 9, 17, 27, 37, 51, 81, 111, 137, 153, 243, 333, 411, 459, 629, 999, 1233, 1377, 1887, 2329, 2997, 3699, 4131, 5069, 5661, 6987, 8991, 11097, 15207, 16983, 20961, 33291, 45621, 50949, 62883, 86173, 136863, 152847, 188649, 258519, 410589, 565947, 775557, 1231767, 2326671, 6980013, 20940039]

約数ペア:

[(1, 20940039), (3, 6980013), (9, 2326671), (17, 1231767), (27, 775557), (37, 565947), (51, 410589), (81, 258519), (111, 188649), (137, 152847), (153, 136863), (243, 86173), (333, 62883), (411, 50949), (459, 45621), (629, 33291), (999, 20961), (1233, 16983), (1377, 15207), (1887, 11097), (2329, 8991), (2997, 6987), (3699, 5661), (4131, 5069)]