218440

素因数分解:

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

素因数の和:181

約数の個数: 32

約数和(自身を含む): 506880

約数和(自身を除く): 288440

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 43, 86, 127, 172, 215, 254, 344, 430, 508, 635, 860, 1016, 1270, 1720, 2540, 5080, 5461, 10922, 21844, 27305, 43688, 54610, 109220, 218440]

約数ペア:

[(1, 218440), (2, 109220), (4, 54610), (5, 43688), (8, 27305), (10, 21844), (20, 10922), (40, 5461), (43, 5080), (86, 2540), (127, 1720), (172, 1270), (215, 1016), (254, 860), (344, 635), (430, 508)]