21947519

素因数分解:

${\mathrm{11}}^1\times {\mathrm{29}}^1\times {\mathrm{107}}^1\times {\mathrm{643}}^1$

素因数の和:790

約数の個数: 16

約数和(自身を含む): 25038720

約数和(自身を除く): 3091201

約数列:

[1, 11, 29, 107, 319, 643, 1177, 3103, 7073, 18647, 34133, 68801, 205117, 756811, 1995229, 21947519]

約数ペア:

[(1, 21947519), (11, 1995229), (29, 756811), (107, 205117), (319, 68801), (643, 34133), (1177, 18647), (3103, 7073)]