13505840

素因数分解:

$2^4\times 5^1\times {\mathrm{79}}^1\times {\mathrm{2137}}^1$

素因数の和:2229

約数の個数: 40

約数和(自身を含む): 31813440

約数和(自身を除く): 18307600

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 79, 80, 158, 316, 395, 632, 790, 1264, 1580, 2137, 3160, 4274, 6320, 8548, 10685, 17096, 21370, 34192, 42740, 85480, 168823, 170960, 337646, 675292, 844115, 1350584, 1688230, 2701168, 3376460, 6752920, 13505840]

約数ペア:

[(1, 13505840), (2, 6752920), (4, 3376460), (5, 2701168), (8, 1688230), (10, 1350584), (16, 844115), (20, 675292), (40, 337646), (79, 170960), (80, 168823), (158, 85480), (316, 42740), (395, 34192), (632, 21370), (790, 17096), (1264, 10685), (1580, 8548), (2137, 6320), (3160, 4274)]