21216522243

素因数分解:

$3^1\times 7^1\times {\mathrm{73}}^1\times {\mathrm{13839871}}^1$

素因数の和:13839954

約数の個数: 16

約数和(自身を含む): 32772816896

約数和(自身を除く): 11556294653

約数列:

[1, 3, 7, 21, 73, 219, 511, 1533, 13839871, 41519613, 96879097, 290637291, 1010310583, 3030931749, 7072174081, 21216522243]

約数ペア:

[(1, 21216522243), (3, 7072174081), (7, 3030931749), (21, 1010310583), (73, 290637291), (219, 96879097), (511, 41519613), (1533, 13839871)]