278326972

素因数分解:

$2^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{199}}^1\times {\mathrm{239}}^1$

素因数の和:479

約数の個数: 96

約数和(自身を含む): 645120000

約数和(自身を除く): 366793028

約数列:

[1, 2, 4, 7, 11, 14, 19, 22, 28, 38, 44, 76, 77, 133, 154, 199, 209, 239, 266, 308, 398, 418, 478, 532, 796, 836, 956, 1393, 1463, 1673, 2189, 2629, 2786, 2926, 3346, 3781, 4378, 4541, 5258, 5572, 5852, 6692, 7562, 8756, 9082, 10516, 15124, 15323, 18164, 18403, 26467, 30646, 31787, 36806, 41591, 47561, 49951, 52934, 61292, 63574, 73612, 83182, 95122, 99902, 105868, 127148, 166364, 190244, 199804, 291137, 332927, 349657, 523171, 582274, 665854, 699314, 903659, 1046342, 1164548, 1331708, 1398628, 1807318, 2092684, 3614636, 3662197, 6325613, 7324394, 9940249, 12651226, 14648788, 19880498, 25302452, 39760996, 69581743, 139163486, 278326972]

約数ペア:

[(1, 278326972), (2, 139163486), (4, 69581743), (7, 39760996), (11, 25302452), (14, 19880498), (19, 14648788), (22, 12651226), (28, 9940249), (38, 7324394), (44, 6325613), (76, 3662197), (77, 3614636), (133, 2092684), (154, 1807318), (199, 1398628), (209, 1331708), (239, 1164548), (266, 1046342), (308, 903659), (398, 699314), (418, 665854), (478, 582274), (532, 523171), (796, 349657), (836, 332927), (956, 291137), (1393, 199804), (1463, 190244), (1673, 166364), (2189, 127148), (2629, 105868), (2786, 99902), (2926, 95122), (3346, 83182), (3781, 73612), (4378, 63574), (4541, 61292), (5258, 52934), (5572, 49951), (5852, 47561), (6692, 41591), (7562, 36806), (8756, 31787), (9082, 30646), (10516, 26467), (15124, 18403), (15323, 18164)]