21004018

素因数分解:

$2^1\times 7^1\times {\mathrm{47}}^1\times {\mathrm{137}}^1\times {\mathrm{233}}^1$

素因数の和:426

約数の個数: 32

約数和(自身を含む): 37200384

約数和(自身を除く): 16196366

約数列:

[1, 2, 7, 14, 47, 94, 137, 233, 274, 329, 466, 658, 959, 1631, 1918, 3262, 6439, 10951, 12878, 21902, 31921, 45073, 63842, 76657, 90146, 153314, 223447, 446894, 1500287, 3000574, 10502009, 21004018]

約数ペア:

[(1, 21004018), (2, 10502009), (7, 3000574), (14, 1500287), (47, 446894), (94, 223447), (137, 153314), (233, 90146), (274, 76657), (329, 63842), (466, 45073), (658, 31921), (959, 21902), (1631, 12878), (1918, 10951), (3262, 6439)]