21639371

素因数分解:

${\mathrm{13}}^1\times {\mathrm{59}}^1\times {\mathrm{89}}^1\times {\mathrm{317}}^1$

素因数の和:478

約数の個数: 16

約数和(自身を含む): 24040800

約数和(自身を除く): 2401429

約数列:

[1, 13, 59, 89, 317, 767, 1157, 4121, 5251, 18703, 28213, 68263, 243139, 366769, 1664567, 21639371]

約数ペア:

[(1, 21639371), (13, 1664567), (59, 366769), (89, 243139), (317, 68263), (767, 28213), (1157, 18703), (4121, 5251)]