20561793

素因数分解:

$3^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{42571}}^1$

素因数の和:42604

約数の個数: 16

約数和(自身を含む): 32695296

約数和(自身を除く): 12133503

約数列:

[1, 3, 7, 21, 23, 69, 161, 483, 42571, 127713, 297997, 893991, 979133, 2937399, 6853931, 20561793]

約数ペア:

[(1, 20561793), (3, 6853931), (7, 2937399), (21, 979133), (23, 893991), (69, 297997), (161, 127713), (483, 42571)]