21209768

素因数分解:

$2^3\times {\mathrm{89}}^1\times {\mathrm{29789}}^1$

素因数の和:29884

約数の個数: 16

約数和(自身を含む): 40216500

約数和(自身を除く): 19006732

約数列:

[1, 2, 4, 8, 89, 178, 356, 712, 29789, 59578, 119156, 238312, 2651221, 5302442, 10604884, 21209768]

約数ペア:

[(1, 21209768), (2, 10604884), (4, 5302442), (8, 2651221), (89, 238312), (178, 119156), (356, 59578), (712, 29789)]