20139678

素因数分解:

$2^1\times 3^4\times {\mathrm{13}}^1\times {\mathrm{73}}^1\times {\mathrm{131}}^1$

素因数の和:231

約数の個数: 80

約数和(自身を含む): 49640976

約数和(自身を除く): 29501298

約数列:

[1, 2, 3, 6, 9, 13, 18, 26, 27, 39, 54, 73, 78, 81, 117, 131, 146, 162, 219, 234, 262, 351, 393, 438, 657, 702, 786, 949, 1053, 1179, 1314, 1703, 1898, 1971, 2106, 2358, 2847, 3406, 3537, 3942, 5109, 5694, 5913, 7074, 8541, 9563, 10218, 10611, 11826, 15327, 17082, 19126, 21222, 25623, 28689, 30654, 45981, 51246, 57378, 76869, 86067, 91962, 124319, 137943, 153738, 172134, 248638, 258201, 275886, 372957, 516402, 745914, 774603, 1118871, 1549206, 2237742, 3356613, 6713226, 10069839, 20139678]

約数ペア:

[(1, 20139678), (2, 10069839), (3, 6713226), (6, 3356613), (9, 2237742), (13, 1549206), (18, 1118871), (26, 774603), (27, 745914), (39, 516402), (54, 372957), (73, 275886), (78, 258201), (81, 248638), (117, 172134), (131, 153738), (146, 137943), (162, 124319), (219, 91962), (234, 86067), (262, 76869), (351, 57378), (393, 51246), (438, 45981), (657, 30654), (702, 28689), (786, 25623), (949, 21222), (1053, 19126), (1179, 17082), (1314, 15327), (1703, 11826), (1898, 10611), (1971, 10218), (2106, 9563), (2358, 8541), (2847, 7074), (3406, 5913), (3537, 5694), (3942, 5109)]