21519568

素因数分解:

$2^4\times 7^1\times {\mathrm{271}}^1\times {\mathrm{709}}^1$

素因数の和:995

約数の個数: 40

約数和(自身を含む): 47893760

約数和(自身を除く): 26374192

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 56, 112, 271, 542, 709, 1084, 1418, 1897, 2168, 2836, 3794, 4336, 4963, 5672, 7588, 9926, 11344, 15176, 19852, 30352, 39704, 79408, 192139, 384278, 768556, 1344973, 1537112, 2689946, 3074224, 5379892, 10759784, 21519568]

約数ペア:

[(1, 21519568), (2, 10759784), (4, 5379892), (7, 3074224), (8, 2689946), (14, 1537112), (16, 1344973), (28, 768556), (56, 384278), (112, 192139), (271, 79408), (542, 39704), (709, 30352), (1084, 19852), (1418, 15176), (1897, 11344), (2168, 9926), (2836, 7588), (3794, 5672), (4336, 4963)]