20491911

素因数分解:

$3^2\times {\mathrm{11}}^1\times {\mathrm{449}}^1\times {\mathrm{461}}^1$

素因数の和:927

約数の個数: 24

約数和(自身を含む): 32432400

約数和(自身を除く): 11940489

約数列:

[1, 3, 9, 11, 33, 99, 449, 461, 1347, 1383, 4041, 4149, 4939, 5071, 14817, 15213, 44451, 45639, 206989, 620967, 1862901, 2276879, 6830637, 20491911]

約数ペア:

[(1, 20491911), (3, 6830637), (9, 2276879), (11, 1862901), (33, 620967), (99, 206989), (449, 45639), (461, 44451), (1347, 15213), (1383, 14817), (4041, 5071), (4149, 4939)]