20686533

素因数分解:

$3^1\times 7^1\times {\mathrm{47}}^1\times {\mathrm{20959}}^1$

素因数の和:21016

約数の個数: 16

約数和(自身を含む): 32194560

約数和(自身を除く): 11508027

約数列:

[1, 3, 7, 21, 47, 141, 329, 987, 20959, 62877, 146713, 440139, 985073, 2955219, 6895511, 20686533]

約数ペア:

[(1, 20686533), (3, 6895511), (7, 2955219), (21, 985073), (47, 440139), (141, 146713), (329, 62877), (987, 20959)]