165402940

素因数分解:

$2^2\times 5^1\times {\mathrm{43}}^1\times {\mathrm{89}}^1\times {\mathrm{2161}}^1$

素因数の和:2302

約数の個数: 48

約数和(自身を含む): 359583840

約数和(自身を除く): 194180900

約数列:

[1, 2, 4, 5, 10, 20, 43, 86, 89, 172, 178, 215, 356, 430, 445, 860, 890, 1780, 2161, 3827, 4322, 7654, 8644, 10805, 15308, 19135, 21610, 38270, 43220, 76540, 92923, 185846, 192329, 371692, 384658, 464615, 769316, 929230, 961645, 1858460, 1923290, 3846580, 8270147, 16540294, 33080588, 41350735, 82701470, 165402940]

約数ペア:

[(1, 165402940), (2, 82701470), (4, 41350735), (5, 33080588), (10, 16540294), (20, 8270147), (43, 3846580), (86, 1923290), (89, 1858460), (172, 961645), (178, 929230), (215, 769316), (356, 464615), (430, 384658), (445, 371692), (860, 192329), (890, 185846), (1780, 92923), (2161, 76540), (3827, 43220), (4322, 38270), (7654, 21610), (8644, 19135), (10805, 15308)]