13853740

素因数分解:

$2^2\times 5^1\times {\mathrm{43}}^1\times {\mathrm{89}}^1\times {\mathrm{181}}^1$

素因数の和:322

約数の個数: 48

約数和(自身を含む): 30270240

約数和(自身を除く): 16416500

約数列:

[1, 2, 4, 5, 10, 20, 43, 86, 89, 172, 178, 181, 215, 356, 362, 430, 445, 724, 860, 890, 905, 1780, 1810, 3620, 3827, 7654, 7783, 15308, 15566, 16109, 19135, 31132, 32218, 38270, 38915, 64436, 76540, 77830, 80545, 155660, 161090, 322180, 692687, 1385374, 2770748, 3463435, 6926870, 13853740]

約数ペア:

[(1, 13853740), (2, 6926870), (4, 3463435), (5, 2770748), (10, 1385374), (20, 692687), (43, 322180), (86, 161090), (89, 155660), (172, 80545), (178, 77830), (181, 76540), (215, 64436), (356, 38915), (362, 38270), (430, 32218), (445, 31132), (724, 19135), (860, 16109), (890, 15566), (905, 15308), (1780, 7783), (1810, 7654), (3620, 3827)]