21804710

素因数分解:

$2^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{47}}^1\times {\mathrm{2729}}^1$

素因数の和:2800

約数の個数: 32

約数和(自身を含む): 42456960

約数和(自身を除く): 20652250

約数列:

[1, 2, 5, 10, 17, 34, 47, 85, 94, 170, 235, 470, 799, 1598, 2729, 3995, 5458, 7990, 13645, 27290, 46393, 92786, 128263, 231965, 256526, 463930, 641315, 1282630, 2180471, 4360942, 10902355, 21804710]

約数ペア:

[(1, 21804710), (2, 10902355), (5, 4360942), (10, 2180471), (17, 1282630), (34, 641315), (47, 463930), (85, 256526), (94, 231965), (170, 128263), (235, 92786), (470, 46393), (799, 27290), (1598, 13645), (2729, 7990), (3995, 5458)]