18995312

素因数分解:

$2^4\times 7^1\times {\mathrm{31}}^1\times {\mathrm{5471}}^1$

素因数の和:5517

約数の個数: 40

約数和(自身を含む): 43425792

約数和(自身を除く): 24430480

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 31, 56, 62, 112, 124, 217, 248, 434, 496, 868, 1736, 3472, 5471, 10942, 21884, 38297, 43768, 76594, 87536, 153188, 169601, 306376, 339202, 612752, 678404, 1187207, 1356808, 2374414, 2713616, 4748828, 9497656, 18995312]

約数ペア:

[(1, 18995312), (2, 9497656), (4, 4748828), (7, 2713616), (8, 2374414), (14, 1356808), (16, 1187207), (28, 678404), (31, 612752), (56, 339202), (62, 306376), (112, 169601), (124, 153188), (217, 87536), (248, 76594), (434, 43768), (496, 38297), (868, 21884), (1736, 10942), (3472, 5471)]