21992504

素因数分解:

$2^3\times {\mathrm{37}}^1\times {\mathrm{191}}^1\times {\mathrm{389}}^1$

素因数の和:623

約数の個数: 32

約数和(自身を含む): 42681600

約数和(自身を除く): 20689096

約数列:

[1, 2, 4, 8, 37, 74, 148, 191, 296, 382, 389, 764, 778, 1528, 1556, 3112, 7067, 14134, 14393, 28268, 28786, 56536, 57572, 74299, 115144, 148598, 297196, 594392, 2749063, 5498126, 10996252, 21992504]

約数ペア:

[(1, 21992504), (2, 10996252), (4, 5498126), (8, 2749063), (37, 594392), (74, 297196), (148, 148598), (191, 115144), (296, 74299), (382, 57572), (389, 56536), (764, 28786), (778, 28268), (1528, 14393), (1556, 14134), (3112, 7067)]