17820404

素因数分解:

$2^2\times 7^1\times {\mathrm{19}}^2\times {\mathrm{41}}^1\times {\mathrm{43}}^1$

素因数の和:133

約数の個数: 72

約数和(自身を含む): 39428928

約数和(自身を除く): 21608524

約数列:

[1, 2, 4, 7, 14, 19, 28, 38, 41, 43, 76, 82, 86, 133, 164, 172, 266, 287, 301, 361, 532, 574, 602, 722, 779, 817, 1148, 1204, 1444, 1558, 1634, 1763, 2527, 3116, 3268, 3526, 5054, 5453, 5719, 7052, 10108, 10906, 11438, 12341, 14801, 15523, 21812, 22876, 24682, 29602, 31046, 33497, 49364, 59204, 62092, 66994, 103607, 108661, 133988, 207214, 217322, 234479, 414428, 434644, 468958, 636443, 937916, 1272886, 2545772, 4455101, 8910202, 17820404]

約数ペア:

[(1, 17820404), (2, 8910202), (4, 4455101), (7, 2545772), (14, 1272886), (19, 937916), (28, 636443), (38, 468958), (41, 434644), (43, 414428), (76, 234479), (82, 217322), (86, 207214), (133, 133988), (164, 108661), (172, 103607), (266, 66994), (287, 62092), (301, 59204), (361, 49364), (532, 33497), (574, 31046), (602, 29602), (722, 24682), (779, 22876), (817, 21812), (1148, 15523), (1204, 14801), (1444, 12341), (1558, 11438), (1634, 10906), (1763, 10108), (2527, 7052), (3116, 5719), (3268, 5453), (3526, 5054)]