20631897

素因数分解:

$3^2\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{41}}^1$

素因数の和:111

約数の個数: 96

約数和(自身を含む): 39626496

約数和(自身を除く): 18994599

約数列:

[1, 3, 9, 11, 13, 17, 23, 33, 39, 41, 51, 69, 99, 117, 123, 143, 153, 187, 207, 221, 253, 299, 369, 391, 429, 451, 533, 561, 663, 697, 759, 897, 943, 1173, 1287, 1353, 1599, 1683, 1989, 2091, 2277, 2431, 2691, 2829, 3289, 3519, 4059, 4301, 4797, 5083, 5863, 6273, 7293, 7667, 8487, 9061, 9867, 10373, 12259, 12903, 15249, 16031, 17589, 21879, 23001, 27183, 29601, 31119, 36777, 38709, 45747, 48093, 52767, 55913, 69003, 81549, 93357, 99671, 110331, 134849, 144279, 167739, 176341, 208403, 299013, 404547, 503217, 529023, 625209, 897039, 1213641, 1587069, 1875627, 2292433, 6877299, 20631897]

約数ペア:

[(1, 20631897), (3, 6877299), (9, 2292433), (11, 1875627), (13, 1587069), (17, 1213641), (23, 897039), (33, 625209), (39, 529023), (41, 503217), (51, 404547), (69, 299013), (99, 208403), (117, 176341), (123, 167739), (143, 144279), (153, 134849), (187, 110331), (207, 99671), (221, 93357), (253, 81549), (299, 69003), (369, 55913), (391, 52767), (429, 48093), (451, 45747), (533, 38709), (561, 36777), (663, 31119), (697, 29601), (759, 27183), (897, 23001), (943, 21879), (1173, 17589), (1287, 16031), (1353, 15249), (1599, 12903), (1683, 12259), (1989, 10373), (2091, 9867), (2277, 9061), (2431, 8487), (2691, 7667), (2829, 7293), (3289, 6273), (3519, 5863), (4059, 5083), (4301, 4797)]