64139187

素因数分解:

$3^1\times 7^2\times {\mathrm{43}}^1\times {\mathrm{73}}^1\times {\mathrm{139}}^1$

素因数の和:272

約数の個数: 48

約数和(自身を含む): 103931520

約数和(自身を除く): 39792333

約数列:

[1, 3, 7, 21, 43, 49, 73, 129, 139, 147, 219, 301, 417, 511, 903, 973, 1533, 2107, 2919, 3139, 3577, 5977, 6321, 6811, 9417, 10147, 10731, 17931, 20433, 21973, 30441, 41839, 65919, 71029, 125517, 153811, 213087, 292873, 436321, 461433, 497203, 878619, 1308963, 1491609, 3054247, 9162741, 21379729, 64139187]

約数ペア:

[(1, 64139187), (3, 21379729), (7, 9162741), (21, 3054247), (43, 1491609), (49, 1308963), (73, 878619), (129, 497203), (139, 461433), (147, 436321), (219, 292873), (301, 213087), (417, 153811), (511, 125517), (903, 71029), (973, 65919), (1533, 41839), (2107, 30441), (2919, 21973), (3139, 20433), (3577, 17931), (5977, 10731), (6321, 10147), (6811, 9417)]