21502047

素因数分解:

$3^1\times 7^1\times {\mathrm{53}}^1\times {\mathrm{19319}}^1$

素因数の和:19382

約数の個数: 16

約数和(自身を含む): 33384960

約数和(自身を除く): 11882913

約数列:

[1, 3, 7, 21, 53, 159, 371, 1113, 19319, 57957, 135233, 405699, 1023907, 3071721, 7167349, 21502047]

約数ペア:

[(1, 21502047), (3, 7167349), (7, 3071721), (21, 1023907), (53, 405699), (159, 135233), (371, 57957), (1113, 19319)]