20500977

素因数分解:

$3^1\times 7^1\times {\mathrm{47}}^1\times {\mathrm{20771}}^1$

素因数の和:20828

約数の個数: 16

約数和(自身を含む): 31905792

約数和(自身を除く): 11404815

約数列:

[1, 3, 7, 21, 47, 141, 329, 987, 20771, 62313, 145397, 436191, 976237, 2928711, 6833659, 20500977]

約数ペア:

[(1, 20500977), (3, 6833659), (7, 2928711), (21, 976237), (47, 436191), (141, 145397), (329, 62313), (987, 20771)]