12978819

素因数分解:

$3^3\times 7^1\times {\mathrm{43}}^1\times {\mathrm{1597}}^1$

素因数の和:1656

約数の個数: 32

約数和(自身を含む): 22499840

約数和(自身を除く): 9521021

約数列:

[1, 3, 7, 9, 21, 27, 43, 63, 129, 189, 301, 387, 903, 1161, 1597, 2709, 4791, 8127, 11179, 14373, 33537, 43119, 68671, 100611, 206013, 301833, 480697, 618039, 1442091, 1854117, 4326273, 12978819]

約数ペア:

[(1, 12978819), (3, 4326273), (7, 1854117), (9, 1442091), (21, 618039), (27, 480697), (43, 301833), (63, 206013), (129, 100611), (189, 68671), (301, 43119), (387, 33537), (903, 14373), (1161, 11179), (1597, 8127), (2709, 4791)]