17991460

素因数分解:

$2^2\times 5^1\times {\mathrm{59}}^1\times {\mathrm{79}}^1\times {\mathrm{193}}^1$

素因数の和:340

約数の個数: 48

約数和(自身を含む): 39110400

約数和(自身を除く): 21118940

約数列:

[1, 2, 4, 5, 10, 20, 59, 79, 118, 158, 193, 236, 295, 316, 386, 395, 590, 772, 790, 965, 1180, 1580, 1930, 3860, 4661, 9322, 11387, 15247, 18644, 22774, 23305, 30494, 45548, 46610, 56935, 60988, 76235, 93220, 113870, 152470, 227740, 304940, 899573, 1799146, 3598292, 4497865, 8995730, 17991460]

約数ペア:

[(1, 17991460), (2, 8995730), (4, 4497865), (5, 3598292), (10, 1799146), (20, 899573), (59, 304940), (79, 227740), (118, 152470), (158, 113870), (193, 93220), (236, 76235), (295, 60988), (316, 56935), (386, 46610), (395, 45548), (590, 30494), (772, 23305), (790, 22774), (965, 18644), (1180, 15247), (1580, 11387), (1930, 9322), (3860, 4661)]