212740479

素因数分解:

$3^3\times 7^1\times {\mathrm{43}}^1\times {\mathrm{26177}}^1$

素因数の和:26236

約数の個数: 32

約数和(自身を含む): 368586240

約数和(自身を除く): 155845761

約数列:

[1, 3, 7, 9, 21, 27, 43, 63, 129, 189, 301, 387, 903, 1161, 2709, 8127, 26177, 78531, 183239, 235593, 549717, 706779, 1125611, 1649151, 3376833, 4947453, 7879277, 10130499, 23637831, 30391497, 70913493, 212740479]

約数ペア:

[(1, 212740479), (3, 70913493), (7, 30391497), (9, 23637831), (21, 10130499), (27, 7879277), (43, 4947453), (63, 3376833), (129, 1649151), (189, 1125611), (301, 706779), (387, 549717), (903, 235593), (1161, 183239), (2709, 78531), (8127, 26177)]