19666864

素因数分解:

$2^4\times 7^1\times {\mathrm{89}}^1\times {\mathrm{1973}}^1$

素因数の和:2077

約数の個数: 40

約数和(自身を含む): 44059680

約数和(自身を除く): 24392816

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 56, 89, 112, 178, 356, 623, 712, 1246, 1424, 1973, 2492, 3946, 4984, 7892, 9968, 13811, 15784, 27622, 31568, 55244, 110488, 175597, 220976, 351194, 702388, 1229179, 1404776, 2458358, 2809552, 4916716, 9833432, 19666864]

約数ペア:

[(1, 19666864), (2, 9833432), (4, 4916716), (7, 2809552), (8, 2458358), (14, 1404776), (16, 1229179), (28, 702388), (56, 351194), (89, 220976), (112, 175597), (178, 110488), (356, 55244), (623, 31568), (712, 27622), (1246, 15784), (1424, 13811), (1973, 9968), (2492, 7892), (3946, 4984)]