21329252

素因数分解:

$2^2\times 7^1\times {\mathrm{71}}^1\times {\mathrm{10729}}^1$

素因数の和:10811

約数の個数: 24

約数和(自身を含む): 43263360

約数和(自身を除く): 21934108

約数列:

[1, 2, 4, 7, 14, 28, 71, 142, 284, 497, 994, 1988, 10729, 21458, 42916, 75103, 150206, 300412, 761759, 1523518, 3047036, 5332313, 10664626, 21329252]

約数ペア:

[(1, 21329252), (2, 10664626), (4, 5332313), (7, 3047036), (14, 1523518), (28, 761759), (71, 300412), (142, 150206), (284, 75103), (497, 42916), (994, 21458), (1988, 10729)]