21084415

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{109}}^1\times {\mathrm{3517}}^1$

素因数の和:3642

約数の個数: 16

約数和(自身を含む): 27862560

約数和(自身を除く): 6778145

約数列:

[1, 5, 11, 55, 109, 545, 1199, 3517, 5995, 17585, 38687, 193435, 383353, 1916765, 4216883, 21084415]

約数ペア:

[(1, 21084415), (5, 4216883), (11, 1916765), (55, 383353), (109, 193435), (545, 38687), (1199, 17585), (3517, 5995)]