139391380

素因数分解:

$2^2\times 5^1\times {\mathrm{43}}^1\times {\mathrm{109}}^1\times {\mathrm{1487}}^1$

素因数の和:1648

約数の個数: 48

約数和(自身を含む): 302480640

約数和(自身を除く): 163089260

約数列:

[1, 2, 4, 5, 10, 20, 43, 86, 109, 172, 215, 218, 430, 436, 545, 860, 1090, 1487, 2180, 2974, 4687, 5948, 7435, 9374, 14870, 18748, 23435, 29740, 46870, 63941, 93740, 127882, 162083, 255764, 319705, 324166, 639410, 648332, 810415, 1278820, 1620830, 3241660, 6969569, 13939138, 27878276, 34847845, 69695690, 139391380]

約数ペア:

[(1, 139391380), (2, 69695690), (4, 34847845), (5, 27878276), (10, 13939138), (20, 6969569), (43, 3241660), (86, 1620830), (109, 1278820), (172, 810415), (215, 648332), (218, 639410), (430, 324166), (436, 319705), (545, 255764), (860, 162083), (1090, 127882), (1487, 93740), (2180, 63941), (2974, 46870), (4687, 29740), (5948, 23435), (7435, 18748), (9374, 14870)]