21552321

素因数分解:

$3^1\times 7^1\times {\mathrm{307}}^1\times {\mathrm{3343}}^1$

素因数の和:3660

約数の個数: 16

約数和(自身を含む): 32958464

約数和(自身を除く): 11406143

約数列:

[1, 3, 7, 21, 307, 921, 2149, 3343, 6447, 10029, 23401, 70203, 1026301, 3078903, 7184107, 21552321]

約数ペア:

[(1, 21552321), (3, 7184107), (7, 3078903), (21, 1026301), (307, 70203), (921, 23401), (2149, 10029), (3343, 6447)]