21356223

素因数分解:

$3^1\times 7^1\times {\mathrm{73}}^1\times {\mathrm{13931}}^1$

素因数の和:14014

約数の個数: 16

約数和(自身を含む): 32990976

約数和(自身を除く): 11634753

約数列:

[1, 3, 7, 21, 73, 219, 511, 1533, 13931, 41793, 97517, 292551, 1016963, 3050889, 7118741, 21356223]

約数ペア:

[(1, 21356223), (3, 7118741), (7, 3050889), (21, 1016963), (73, 292551), (219, 97517), (511, 41793), (1533, 13931)]