20482878

素因数分解:

$2^1\times 3^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{43}}^1\times {\mathrm{197}}^1$

素因数の和:289

約数の個数: 64

約数和(自身を含む): 46835712

約数和(自身を除く): 26352834

約数列:

[1, 2, 3, 6, 13, 26, 31, 39, 43, 62, 78, 86, 93, 129, 186, 197, 258, 394, 403, 559, 591, 806, 1118, 1182, 1209, 1333, 1677, 2418, 2561, 2666, 3354, 3999, 5122, 6107, 7683, 7998, 8471, 12214, 15366, 16942, 17329, 18321, 25413, 34658, 36642, 50826, 51987, 79391, 103974, 110123, 158782, 220246, 238173, 262601, 330369, 476346, 525202, 660738, 787803, 1575606, 3413813, 6827626, 10241439, 20482878]

約数ペア:

[(1, 20482878), (2, 10241439), (3, 6827626), (6, 3413813), (13, 1575606), (26, 787803), (31, 660738), (39, 525202), (43, 476346), (62, 330369), (78, 262601), (86, 238173), (93, 220246), (129, 158782), (186, 110123), (197, 103974), (258, 79391), (394, 51987), (403, 50826), (559, 36642), (591, 34658), (806, 25413), (1118, 18321), (1182, 17329), (1209, 16942), (1333, 15366), (1677, 12214), (2418, 8471), (2561, 7998), (2666, 7683), (3354, 6107), (3999, 5122)]