21201512

素因数分解:

$2^3\times {\mathrm{47}}^1\times {\mathrm{113}}^1\times {\mathrm{499}}^1$

素因数の和:665

約数の個数: 32

約数和(自身を含む): 41040000

約数和(自身を除く): 19838488

約数列:

[1, 2, 4, 8, 47, 94, 113, 188, 226, 376, 452, 499, 904, 998, 1996, 3992, 5311, 10622, 21244, 23453, 42488, 46906, 56387, 93812, 112774, 187624, 225548, 451096, 2650189, 5300378, 10600756, 21201512]

約数ペア:

[(1, 21201512), (2, 10600756), (4, 5300378), (8, 2650189), (47, 451096), (94, 225548), (113, 187624), (188, 112774), (226, 93812), (376, 56387), (452, 46906), (499, 42488), (904, 23453), (998, 21244), (1996, 10622), (3992, 5311)]