19387760

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{89}}^1\times {\mathrm{389}}^1$

素因数の和:498

約数の個数: 80

約数和(自身を含む): 52228800

約数和(自身を除く): 32841040

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 56, 70, 80, 89, 112, 140, 178, 280, 356, 389, 445, 560, 623, 712, 778, 890, 1246, 1424, 1556, 1780, 1945, 2492, 2723, 3112, 3115, 3560, 3890, 4984, 5446, 6224, 6230, 7120, 7780, 9968, 10892, 12460, 13615, 15560, 21784, 24920, 27230, 31120, 34621, 43568, 49840, 54460, 69242, 108920, 138484, 173105, 217840, 242347, 276968, 346210, 484694, 553936, 692420, 969388, 1211735, 1384840, 1938776, 2423470, 2769680, 3877552, 4846940, 9693880, 19387760]

約数ペア:

[(1, 19387760), (2, 9693880), (4, 4846940), (5, 3877552), (7, 2769680), (8, 2423470), (10, 1938776), (14, 1384840), (16, 1211735), (20, 969388), (28, 692420), (35, 553936), (40, 484694), (56, 346210), (70, 276968), (80, 242347), (89, 217840), (112, 173105), (140, 138484), (178, 108920), (280, 69242), (356, 54460), (389, 49840), (445, 43568), (560, 34621), (623, 31120), (712, 27230), (778, 24920), (890, 21784), (1246, 15560), (1424, 13615), (1556, 12460), (1780, 10892), (1945, 9968), (2492, 7780), (2723, 7120), (3112, 6230), (3115, 6224), (3560, 5446), (3890, 4984)]