21098077

素因数分解:

$7^2\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{3011}}^1$

素因数の和:3049

約数の個数: 24

約数和(自身を含む): 28842912

約数和(自身を除く): 7744835

約数列:

[1, 7, 11, 13, 49, 77, 91, 143, 539, 637, 1001, 3011, 7007, 21077, 33121, 39143, 147539, 231847, 274001, 430573, 1622929, 1918007, 3014011, 21098077]

約数ペア:

[(1, 21098077), (7, 3014011), (11, 1918007), (13, 1622929), (49, 430573), (77, 274001), (91, 231847), (143, 147539), (539, 39143), (637, 33121), (1001, 21077), (3011, 7007)]