21357021

素因数分解:

$3^1\times 7^1\times {\mathrm{29}}^1\times {\mathrm{35069}}^1$

素因数の和:35108

約数の個数: 16

約数和(自身を含む): 33667200

約数和(自身を除く): 12310179

約数列:

[1, 3, 7, 21, 29, 87, 203, 609, 35069, 105207, 245483, 736449, 1017001, 3051003, 7119007, 21357021]

約数ペア:

[(1, 21357021), (3, 7119007), (7, 3051003), (21, 1017001), (29, 736449), (87, 245483), (203, 105207), (609, 35069)]