21177512

素因数分解:

$2^3\times {\mathrm{17}}^1\times {\mathrm{155717}}^1$

素因数の和:155740

約数の個数: 16

約数和(自身を含む): 42043860

約数和(自身を除く): 20866348

約数列:

[1, 2, 4, 8, 17, 34, 68, 136, 155717, 311434, 622868, 1245736, 2647189, 5294378, 10588756, 21177512]

約数ペア:

[(1, 21177512), (2, 10588756), (4, 5294378), (8, 2647189), (17, 1245736), (34, 622868), (68, 311434), (136, 155717)]