21663992

素因数分解:

$2^3\times 7^1\times {\mathrm{47}}^1\times {\mathrm{8231}}^1$

素因数の和:8291

約数の個数: 32

約数和(自身を含む): 47416320

約数和(自身を除く): 25752328

約数列:

[1, 2, 4, 7, 8, 14, 28, 47, 56, 94, 188, 329, 376, 658, 1316, 2632, 8231, 16462, 32924, 57617, 65848, 115234, 230468, 386857, 460936, 773714, 1547428, 2707999, 3094856, 5415998, 10831996, 21663992]

約数ペア:

[(1, 21663992), (2, 10831996), (4, 5415998), (7, 3094856), (8, 2707999), (14, 1547428), (28, 773714), (47, 460936), (56, 386857), (94, 230468), (188, 115234), (329, 65848), (376, 57617), (658, 32924), (1316, 16462), (2632, 8231)]