28057988

素因数分解:

$2^2\times 7^2\times {\mathrm{37}}^1\times {\mathrm{53}}^1\times {\mathrm{73}}^1$

素因数の和:181

約数の個数: 72

約数和(自身を含む): 60587352

約数和(自身を除く): 32529364

約数列:

[1, 2, 4, 7, 14, 28, 37, 49, 53, 73, 74, 98, 106, 146, 148, 196, 212, 259, 292, 371, 511, 518, 742, 1022, 1036, 1484, 1813, 1961, 2044, 2597, 2701, 3577, 3626, 3869, 3922, 5194, 5402, 7154, 7252, 7738, 7844, 10388, 10804, 13727, 14308, 15476, 18907, 27083, 27454, 37814, 54166, 54908, 75628, 96089, 108332, 132349, 143153, 189581, 192178, 264698, 286306, 379162, 384356, 529396, 572612, 758324, 1002071, 2004142, 4008284, 7014497, 14028994, 28057988]

約数ペア:

[(1, 28057988), (2, 14028994), (4, 7014497), (7, 4008284), (14, 2004142), (28, 1002071), (37, 758324), (49, 572612), (53, 529396), (73, 384356), (74, 379162), (98, 286306), (106, 264698), (146, 192178), (148, 189581), (196, 143153), (212, 132349), (259, 108332), (292, 96089), (371, 75628), (511, 54908), (518, 54166), (742, 37814), (1022, 27454), (1036, 27083), (1484, 18907), (1813, 15476), (1961, 14308), (2044, 13727), (2597, 10804), (2701, 10388), (3577, 7844), (3626, 7738), (3869, 7252), (3922, 7154), (5194, 5402)]