21715665921

素因数分解:

$3^4\times {\mathrm{17}}^1\times {\mathrm{15770273}}^1$

素因数の和:15770302

約数の個数: 20

約数和(自身を含む): 34347656772

約数和(自身を除く): 12631990851

約数列:

[1, 3, 9, 17, 27, 51, 81, 153, 459, 1377, 15770273, 47310819, 141932457, 268094641, 425797371, 804283923, 1277392113, 2412851769, 7238555307, 21715665921]

約数ペア:

[(1, 21715665921), (3, 7238555307), (9, 2412851769), (17, 1277392113), (27, 804283923), (51, 425797371), (81, 268094641), (153, 141932457), (459, 47310819), (1377, 15770273)]