8900140

素因数分解:

$2^2\times 5^1\times {\mathrm{43}}^1\times {\mathrm{79}}^1\times {\mathrm{131}}^1$

素因数の和:262

約数の個数: 48

約数和(自身を含む): 19514880

約数和(自身を除く): 10614740

約数列:

[1, 2, 4, 5, 10, 20, 43, 79, 86, 131, 158, 172, 215, 262, 316, 395, 430, 524, 655, 790, 860, 1310, 1580, 2620, 3397, 5633, 6794, 10349, 11266, 13588, 16985, 20698, 22532, 28165, 33970, 41396, 51745, 56330, 67940, 103490, 112660, 206980, 445007, 890014, 1780028, 2225035, 4450070, 8900140]

約数ペア:

[(1, 8900140), (2, 4450070), (4, 2225035), (5, 1780028), (10, 890014), (20, 445007), (43, 206980), (79, 112660), (86, 103490), (131, 67940), (158, 56330), (172, 51745), (215, 41396), (262, 33970), (316, 28165), (395, 22532), (430, 20698), (524, 16985), (655, 13588), (790, 11266), (860, 10349), (1310, 6794), (1580, 5633), (2620, 3397)]