18804681

素因数分解:

$3^2\times 7^2\times {\mathrm{42641}}^1$

素因数の和:42661

約数の個数: 18

約数和(自身を含む): 31597722

約数和(自身を除く): 12793041

約数列:

[1, 3, 7, 9, 21, 49, 63, 147, 441, 42641, 127923, 298487, 383769, 895461, 2089409, 2686383, 6268227, 18804681]

約数ペア:

[(1, 18804681), (3, 6268227), (7, 2686383), (9, 2089409), (21, 895461), (49, 383769), (63, 298487), (147, 127923), (441, 42641)]