19784380

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{29}}^1\times {\mathrm{443}}^1$

素因数の和:499

約数の個数: 96

約数和(自身を含む): 53706240

約数和(自身を除く): 33921860

約数列:

[1, 2, 4, 5, 7, 10, 11, 14, 20, 22, 28, 29, 35, 44, 55, 58, 70, 77, 110, 116, 140, 145, 154, 203, 220, 290, 308, 319, 385, 406, 443, 580, 638, 770, 812, 886, 1015, 1276, 1540, 1595, 1772, 2030, 2215, 2233, 3101, 3190, 4060, 4430, 4466, 4873, 6202, 6380, 8860, 8932, 9746, 11165, 12404, 12847, 15505, 19492, 22330, 24365, 25694, 31010, 34111, 44660, 48730, 51388, 62020, 64235, 68222, 89929, 97460, 128470, 136444, 141317, 170555, 179858, 256940, 282634, 341110, 359716, 449645, 565268, 682220, 706585, 899290, 989219, 1413170, 1798580, 1978438, 2826340, 3956876, 4946095, 9892190, 19784380]

約数ペア:

[(1, 19784380), (2, 9892190), (4, 4946095), (5, 3956876), (7, 2826340), (10, 1978438), (11, 1798580), (14, 1413170), (20, 989219), (22, 899290), (28, 706585), (29, 682220), (35, 565268), (44, 449645), (55, 359716), (58, 341110), (70, 282634), (77, 256940), (110, 179858), (116, 170555), (140, 141317), (145, 136444), (154, 128470), (203, 97460), (220, 89929), (290, 68222), (308, 64235), (319, 62020), (385, 51388), (406, 48730), (443, 44660), (580, 34111), (638, 31010), (770, 25694), (812, 24365), (886, 22330), (1015, 19492), (1276, 15505), (1540, 12847), (1595, 12404), (1772, 11165), (2030, 9746), (2215, 8932), (2233, 8860), (3101, 6380), (3190, 6202), (4060, 4873), (4430, 4466)]