21192741

素因数分解:

$3^2\times {\mathrm{59}}^1\times {\mathrm{107}}^1\times {\mathrm{373}}^1$

素因数の和:545

約数の個数: 24

約数和(自身を含む): 31505760

約数和(自身を除く): 10313019

約数列:

[1, 3, 9, 59, 107, 177, 321, 373, 531, 963, 1119, 3357, 6313, 18939, 22007, 39911, 56817, 66021, 119733, 198063, 359199, 2354749, 7064247, 21192741]

約数ペア:

[(1, 21192741), (3, 7064247), (9, 2354749), (59, 359199), (107, 198063), (177, 119733), (321, 66021), (373, 56817), (531, 39911), (963, 22007), (1119, 18939), (3357, 6313)]