21264397

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{12007}}^1$

素因数の和:12048

約数の個数: 16

約数和(自身を含む): 27666432

約数和(自身を除く): 6402035

約数列:

[1, 7, 11, 23, 77, 161, 253, 1771, 12007, 84049, 132077, 276161, 924539, 1933127, 3037771, 21264397]

約数ペア:

[(1, 21264397), (7, 3037771), (11, 1933127), (23, 924539), (77, 276161), (161, 132077), (253, 84049), (1771, 12007)]