20697296

素因数分解:

$2^4\times {\mathrm{17}}^1\times {\mathrm{47}}^1\times {\mathrm{1619}}^1$

素因数の和:1691

約数の個数: 40

約数和(自身を含む): 43390080

約数和(自身を除く): 22692784

約数列:

[1, 2, 4, 8, 16, 17, 34, 47, 68, 94, 136, 188, 272, 376, 752, 799, 1598, 1619, 3196, 3238, 6392, 6476, 12784, 12952, 25904, 27523, 55046, 76093, 110092, 152186, 220184, 304372, 440368, 608744, 1217488, 1293581, 2587162, 5174324, 10348648, 20697296]

約数ペア:

[(1, 20697296), (2, 10348648), (4, 5174324), (8, 2587162), (16, 1293581), (17, 1217488), (34, 608744), (47, 440368), (68, 304372), (94, 220184), (136, 152186), (188, 110092), (272, 76093), (376, 55046), (752, 27523), (799, 25904), (1598, 12952), (1619, 12784), (3196, 6476), (3238, 6392)]