156901660

素因数分解:

$2^2\times 5^1\times {\mathrm{89}}^1\times {\mathrm{181}}^1\times {\mathrm{487}}^1$

素因数の和:766

約数の個数: 48

約数和(自身を含む): 335724480

約数和(自身を除く): 178822820

約数列:

[1, 2, 4, 5, 10, 20, 89, 178, 181, 356, 362, 445, 487, 724, 890, 905, 974, 1780, 1810, 1948, 2435, 3620, 4870, 9740, 16109, 32218, 43343, 64436, 80545, 86686, 88147, 161090, 173372, 176294, 216715, 322180, 352588, 433430, 440735, 866860, 881470, 1762940, 7845083, 15690166, 31380332, 39225415, 78450830, 156901660]

約数ペア:

[(1, 156901660), (2, 78450830), (4, 39225415), (5, 31380332), (10, 15690166), (20, 7845083), (89, 1762940), (178, 881470), (181, 866860), (356, 440735), (362, 433430), (445, 352588), (487, 322180), (724, 216715), (890, 176294), (905, 173372), (974, 161090), (1780, 88147), (1810, 86686), (1948, 80545), (2435, 64436), (3620, 43343), (4870, 32218), (9740, 16109)]