18948909

素因数分解:

$3^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{47491}}^1$

素因数の和:47520

約数の個数: 16

約数和(自身を含む): 30394880

約数和(自身を除く): 11445971

約数列:

[1, 3, 7, 19, 21, 57, 133, 399, 47491, 142473, 332437, 902329, 997311, 2706987, 6316303, 18948909]

約数ペア:

[(1, 18948909), (3, 6316303), (7, 2706987), (19, 997311), (21, 902329), (57, 332437), (133, 142473), (399, 47491)]