21953512

素因数分解:

$2^3\times 7^1\times {\mathrm{19}}^1\times {\mathrm{47}}^1\times {\mathrm{439}}^1$

素因数の和:518

約数の個数: 64

約数和(自身を含む): 50688000

約数和(自身を除く): 28734488

約数列:

[1, 2, 4, 7, 8, 14, 19, 28, 38, 47, 56, 76, 94, 133, 152, 188, 266, 329, 376, 439, 532, 658, 878, 893, 1064, 1316, 1756, 1786, 2632, 3073, 3512, 3572, 6146, 6251, 7144, 8341, 12292, 12502, 16682, 20633, 24584, 25004, 33364, 41266, 50008, 58387, 66728, 82532, 116774, 144431, 165064, 233548, 288862, 392027, 467096, 577724, 784054, 1155448, 1568108, 2744189, 3136216, 5488378, 10976756, 21953512]

約数ペア:

[(1, 21953512), (2, 10976756), (4, 5488378), (7, 3136216), (8, 2744189), (14, 1568108), (19, 1155448), (28, 784054), (38, 577724), (47, 467096), (56, 392027), (76, 288862), (94, 233548), (133, 165064), (152, 144431), (188, 116774), (266, 82532), (329, 66728), (376, 58387), (439, 50008), (532, 41266), (658, 33364), (878, 25004), (893, 24584), (1064, 20633), (1316, 16682), (1756, 12502), (1786, 12292), (2632, 8341), (3073, 7144), (3512, 6251), (3572, 6146)]