20277621

素因数分解:

$3^5\times 7^2\times {\mathrm{13}}^1\times {\mathrm{131}}^1$

素因数の和:173

約数の個数: 72

約数和(自身を含む): 38342304

約数和(自身を除く): 18064683

約数列:

[1, 3, 7, 9, 13, 21, 27, 39, 49, 63, 81, 91, 117, 131, 147, 189, 243, 273, 351, 393, 441, 567, 637, 819, 917, 1053, 1179, 1323, 1701, 1703, 1911, 2457, 2751, 3159, 3537, 3969, 5109, 5733, 6419, 7371, 8253, 10611, 11907, 11921, 15327, 17199, 19257, 22113, 24759, 31833, 35763, 45981, 51597, 57771, 74277, 83447, 107289, 137943, 154791, 173313, 222831, 250341, 321867, 413829, 519939, 751023, 965601, 1559817, 2253069, 2896803, 6759207, 20277621]

約数ペア:

[(1, 20277621), (3, 6759207), (7, 2896803), (9, 2253069), (13, 1559817), (21, 965601), (27, 751023), (39, 519939), (49, 413829), (63, 321867), (81, 250341), (91, 222831), (117, 173313), (131, 154791), (147, 137943), (189, 107289), (243, 83447), (273, 74277), (351, 57771), (393, 51597), (441, 45981), (567, 35763), (637, 31833), (819, 24759), (917, 22113), (1053, 19257), (1179, 17199), (1323, 15327), (1701, 11921), (1703, 11907), (1911, 10611), (2457, 8253), (2751, 7371), (3159, 6419), (3537, 5733), (3969, 5109)]