21389235

素因数分解:

$3^1\times 5^1\times 7^2\times {\mathrm{29101}}^1$

素因数の和:29123

約数の個数: 24

約数和(自身を含む): 39811536

約数和(自身を除く): 18422301

約数列:

[1, 3, 5, 7, 15, 21, 35, 49, 105, 147, 245, 735, 29101, 87303, 145505, 203707, 436515, 611121, 1018535, 1425949, 3055605, 4277847, 7129745, 21389235]

約数ペア:

[(1, 21389235), (3, 7129745), (5, 4277847), (7, 3055605), (15, 1425949), (21, 1018535), (35, 611121), (49, 436515), (105, 203707), (147, 145505), (245, 87303), (735, 29101)]