21243691

素因数分解:

$7^1\times {\mathrm{19}}^1\times {\mathrm{211}}^1\times {\mathrm{757}}^1$

素因数の和:994

約数の個数: 16

約数和(自身を含む): 25711360

約数和(自身を除く): 4467669

約数列:

[1, 7, 19, 133, 211, 757, 1477, 4009, 5299, 14383, 28063, 100681, 159727, 1118089, 3034813, 21243691]

約数ペア:

[(1, 21243691), (7, 3034813), (19, 1118089), (133, 159727), (211, 100681), (757, 28063), (1477, 14383), (4009, 5299)]