20711817

素因数分解:

$3^2\times 7^1\times {\mathrm{53}}^1\times {\mathrm{6203}}^1$

素因数の和:6269

約数の個数: 24

約数和(自身を含む): 34841664

約数和(自身を除く): 14129847

約数列:

[1, 3, 7, 9, 21, 53, 63, 159, 371, 477, 1113, 3339, 6203, 18609, 43421, 55827, 130263, 328759, 390789, 986277, 2301313, 2958831, 6903939, 20711817]

約数ペア:

[(1, 20711817), (3, 6903939), (7, 2958831), (9, 2301313), (21, 986277), (53, 390789), (63, 328759), (159, 130263), (371, 55827), (477, 43421), (1113, 18609), (3339, 6203)]