21000686

素因数分解:

$2^1\times 7^1\times {\mathrm{1201}}^1\times {\mathrm{1249}}^1$

素因数の和:2459

約数の個数: 16

約数和(自身を含む): 36060000

約数和(自身を除く): 15059314

約数列:

[1, 2, 7, 14, 1201, 1249, 2402, 2498, 8407, 8743, 16814, 17486, 1500049, 3000098, 10500343, 21000686]

約数ペア:

[(1, 21000686), (2, 10500343), (7, 3000098), (14, 1500049), (1201, 17486), (1249, 16814), (2402, 8743), (2498, 8407)]