78888789

素因数分解:

$3^3\times 7^1\times {\mathrm{17}}^1\times {\mathrm{43}}^1\times {\mathrm{571}}^1$

素因数の和:647

約数の個数: 64

約数和(自身を含む): 144967680

約数和(自身を除く): 66078891

約数列:

[1, 3, 7, 9, 17, 21, 27, 43, 51, 63, 119, 129, 153, 189, 301, 357, 387, 459, 571, 731, 903, 1071, 1161, 1713, 2193, 2709, 3213, 3997, 5117, 5139, 6579, 8127, 9707, 11991, 15351, 15417, 19737, 24553, 29121, 35973, 46053, 67949, 73659, 87363, 107919, 138159, 171871, 203847, 220977, 262089, 417401, 515613, 611541, 662931, 1252203, 1546839, 1834623, 2921807, 3756609, 4640517, 8765421, 11269827, 26296263, 78888789]

約数ペア:

[(1, 78888789), (3, 26296263), (7, 11269827), (9, 8765421), (17, 4640517), (21, 3756609), (27, 2921807), (43, 1834623), (51, 1546839), (63, 1252203), (119, 662931), (129, 611541), (153, 515613), (189, 417401), (301, 262089), (357, 220977), (387, 203847), (459, 171871), (571, 138159), (731, 107919), (903, 87363), (1071, 73659), (1161, 67949), (1713, 46053), (2193, 35973), (2709, 29121), (3213, 24553), (3997, 19737), (5117, 15417), (5139, 15351), (6579, 11991), (8127, 9707)]