61381640

素因数分解:

$2^3\times 5^1\times {\mathrm{43}}^1\times {\mathrm{127}}^1\times {\mathrm{281}}^1$

素因数の和:462

約数の個数: 64

約数和(自身を含む): 142940160

約数和(自身を除く): 81558520

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 43, 86, 127, 172, 215, 254, 281, 344, 430, 508, 562, 635, 860, 1016, 1124, 1270, 1405, 1720, 2248, 2540, 2810, 5080, 5461, 5620, 10922, 11240, 12083, 21844, 24166, 27305, 35687, 43688, 48332, 54610, 60415, 71374, 96664, 109220, 120830, 142748, 178435, 218440, 241660, 285496, 356870, 483320, 713740, 1427480, 1534541, 3069082, 6138164, 7672705, 12276328, 15345410, 30690820, 61381640]

約数ペア:

[(1, 61381640), (2, 30690820), (4, 15345410), (5, 12276328), (8, 7672705), (10, 6138164), (20, 3069082), (40, 1534541), (43, 1427480), (86, 713740), (127, 483320), (172, 356870), (215, 285496), (254, 241660), (281, 218440), (344, 178435), (430, 142748), (508, 120830), (562, 109220), (635, 96664), (860, 71374), (1016, 60415), (1124, 54610), (1270, 48332), (1405, 43688), (1720, 35687), (2248, 27305), (2540, 24166), (2810, 21844), (5080, 12083), (5461, 11240), (5620, 10922)]