20491329

素因数分解:

$3^1\times {\mathrm{19}}^1\times {\mathrm{307}}^1\times {\mathrm{1171}}^1$

素因数の和:1500

約数の個数: 16

約数和(自身を含む): 28878080

約数和(自身を除く): 8386751

約数列:

[1, 3, 19, 57, 307, 921, 1171, 3513, 5833, 17499, 22249, 66747, 359497, 1078491, 6830443, 20491329]

約数ペア:

[(1, 20491329), (3, 6830443), (19, 1078491), (57, 359497), (307, 66747), (921, 22249), (1171, 17499), (3513, 5833)]