21989806

素因数分解:

$2^1\times {\mathrm{17}}^1\times {\mathrm{53}}^1\times {\mathrm{12203}}^1$

素因数の和:12275

約数の個数: 16

約数和(自身を含む): 35586864

約数和(自身を除く): 13597058

約数列:

[1, 2, 17, 34, 53, 106, 901, 1802, 12203, 24406, 207451, 414902, 646759, 1293518, 10994903, 21989806]

約数ペア:

[(1, 21989806), (2, 10994903), (17, 1293518), (34, 646759), (53, 414902), (106, 207451), (901, 24406), (1802, 12203)]