21920205

素因数分解:

$3^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{76913}}^1$

素因数の和:76940

約数の個数: 16

約数和(自身を含む): 36918720

約数和(自身を除く): 14998515

約数列:

[1, 3, 5, 15, 19, 57, 95, 285, 76913, 230739, 384565, 1153695, 1461347, 4384041, 7306735, 21920205]

約数ペア:

[(1, 21920205), (3, 7306735), (5, 4384041), (15, 1461347), (19, 1153695), (57, 384565), (95, 230739), (285, 76913)]