21186473

素因数分解:

$7^2\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{1709}}^1$

素因数の和:1757

約数の個数: 24

約数和(自身を含む): 28071360

約数和(自身を除く): 6884887

約数列:

[1, 7, 11, 23, 49, 77, 161, 253, 539, 1127, 1709, 1771, 11963, 12397, 18799, 39307, 83741, 131593, 275149, 432377, 921151, 1926043, 3026639, 21186473]

約数ペア:

[(1, 21186473), (7, 3026639), (11, 1926043), (23, 921151), (49, 432377), (77, 275149), (161, 131593), (253, 83741), (539, 39307), (1127, 18799), (1709, 12397), (1771, 11963)]