21012838

素因数分解:

$2^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{136447}}^1$

素因数の和:136467

約数の個数: 16

約数和(自身を含む): 39297024

約数和(自身を除く): 18284186

約数列:

[1, 2, 7, 11, 14, 22, 77, 154, 136447, 272894, 955129, 1500917, 1910258, 3001834, 10506419, 21012838]

約数ペア:

[(1, 21012838), (2, 10506419), (7, 3001834), (11, 1910258), (14, 1500917), (22, 955129), (77, 272894), (154, 136447)]