19518044

素因数分解:

$2^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{43}}^2$

素因数の和:139

約数の個数: 72

約数和(自身を含む): 44523360

約数和(自身を除く): 25005316

約数列:

[1, 2, 4, 7, 13, 14, 26, 28, 29, 43, 52, 58, 86, 91, 116, 172, 182, 203, 301, 364, 377, 406, 559, 602, 754, 812, 1118, 1204, 1247, 1508, 1849, 2236, 2494, 2639, 3698, 3913, 4988, 5278, 7396, 7826, 8729, 10556, 12943, 15652, 16211, 17458, 24037, 25886, 32422, 34916, 48074, 51772, 53621, 64844, 96148, 107242, 113477, 168259, 214484, 226954, 336518, 375347, 453908, 673036, 697073, 750694, 1394146, 1501388, 2788292, 4879511, 9759022, 19518044]

約数ペア:

[(1, 19518044), (2, 9759022), (4, 4879511), (7, 2788292), (13, 1501388), (14, 1394146), (26, 750694), (28, 697073), (29, 673036), (43, 453908), (52, 375347), (58, 336518), (86, 226954), (91, 214484), (116, 168259), (172, 113477), (182, 107242), (203, 96148), (301, 64844), (364, 53621), (377, 51772), (406, 48074), (559, 34916), (602, 32422), (754, 25886), (812, 24037), (1118, 17458), (1204, 16211), (1247, 15652), (1508, 12943), (1849, 10556), (2236, 8729), (2494, 7826), (2639, 7396), (3698, 5278), (3913, 4988)]