21260930

素因数分解:

$2^1\times 5^1\times {\mathrm{509}}^1\times {\mathrm{4177}}^1$

素因数の和:4693

約数の個数: 16

約数和(自身を含む): 38354040

約数和(自身を除く): 17093110

約数列:

[1, 2, 5, 10, 509, 1018, 2545, 4177, 5090, 8354, 20885, 41770, 2126093, 4252186, 10630465, 21260930]

約数ペア:

[(1, 21260930), (2, 10630465), (5, 4252186), (10, 2126093), (509, 41770), (1018, 20885), (2545, 8354), (4177, 5090)]