19964007

素因数分解:

$3^2\times 7^1\times {\mathrm{41}}^1\times {\mathrm{59}}^1\times {\mathrm{131}}^1$

素因数の和:244

約数の個数: 48

約数和(自身を含む): 34594560

約数和(自身を除く): 14630553

約数列:

[1, 3, 7, 9, 21, 41, 59, 63, 123, 131, 177, 287, 369, 393, 413, 531, 861, 917, 1179, 1239, 2419, 2583, 2751, 3717, 5371, 7257, 7729, 8253, 16113, 16933, 21771, 23187, 37597, 48339, 50799, 54103, 69561, 112791, 152397, 162309, 316889, 338373, 486927, 950667, 2218223, 2852001, 6654669, 19964007]

約数ペア:

[(1, 19964007), (3, 6654669), (7, 2852001), (9, 2218223), (21, 950667), (41, 486927), (59, 338373), (63, 316889), (123, 162309), (131, 152397), (177, 112791), (287, 69561), (369, 54103), (393, 50799), (413, 48339), (531, 37597), (861, 23187), (917, 21771), (1179, 16933), (1239, 16113), (2419, 8253), (2583, 7729), (2751, 7257), (3717, 5371)]