245397321

素因数分解:

$3^2\times {\mathrm{13}}^1\times {\mathrm{313}}^1\times {\mathrm{6701}}^1$

素因数の和:7033

約数の個数: 24

約数和(自身を含む): 383005896

約数和(自身を除く): 137608575

約数列:

[1, 3, 9, 13, 39, 117, 313, 939, 2817, 4069, 6701, 12207, 20103, 36621, 60309, 87113, 261339, 784017, 2097413, 6292239, 18876717, 27266369, 81799107, 245397321]

約数ペア:

[(1, 245397321), (3, 81799107), (9, 27266369), (13, 18876717), (39, 6292239), (117, 2097413), (313, 784017), (939, 261339), (2817, 87113), (4069, 60309), (6701, 36621), (12207, 20103)]