20921537

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{149}}^1\times {\mathrm{1543}}^1$

素因数の和:1712

約数の個数: 16

約数和(自身を含む): 25939200

約数和(自身を除く): 5017663

約数列:

[1, 7, 13, 91, 149, 1043, 1543, 1937, 10801, 13559, 20059, 140413, 229907, 1609349, 2988791, 20921537]

約数ペア:

[(1, 20921537), (7, 2988791), (13, 1609349), (91, 229907), (149, 140413), (1043, 20059), (1543, 13559), (1937, 10801)]