21563373

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{307}}^1\times {\mathrm{1801}}^1$

素因数の和:2124

約数の個数: 16

約数和(自身を含む): 31080896

約数和(自身を除く): 9517523

約数列:

[1, 3, 13, 39, 307, 921, 1801, 3991, 5403, 11973, 23413, 70239, 552907, 1658721, 7187791, 21563373]

約数ペア:

[(1, 21563373), (3, 7187791), (13, 1658721), (39, 552907), (307, 70239), (921, 23413), (1801, 11973), (3991, 5403)]