21378401

素因数分解:

${\mathrm{11}}^2\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{547}}^1$

素因数の和:605

約数の個数: 24

約数和(自身を含む): 26238240

約数和(自身を除く): 4859839

約数列:

[1, 11, 17, 19, 121, 187, 209, 323, 547, 2057, 2299, 3553, 6017, 9299, 10393, 39083, 66187, 102289, 114323, 176681, 1125179, 1257553, 1943491, 21378401]

約数ペア:

[(1, 21378401), (11, 1943491), (17, 1257553), (19, 1125179), (121, 176681), (187, 114323), (209, 102289), (323, 66187), (547, 39083), (2057, 10393), (2299, 9299), (3553, 6017)]