21861777

素因数分解:

$3^1\times 7^1\times {\mathrm{307}}^1\times {\mathrm{3391}}^1$

素因数の和:3708

約数の個数: 16

約数和(自身を含む): 33431552

約数和(自身を除く): 11569775

約数列:

[1, 3, 7, 21, 307, 921, 2149, 3391, 6447, 10173, 23737, 71211, 1041037, 3123111, 7287259, 21861777]

約数ペア:

[(1, 21861777), (3, 7287259), (7, 3123111), (21, 1041037), (307, 71211), (921, 23737), (2149, 10173), (3391, 6447)]