1278531891

素因数分解:

$3^3\times 7^1\times {\mathrm{13}}^1\times {\mathrm{520363}}^1$

素因数の和:520392

約数の個数: 32

約数和(自身を含む): 2331230720

約数和(自身を除く): 1052698829

約数列:

[1, 3, 7, 9, 13, 21, 27, 39, 63, 91, 117, 189, 273, 351, 819, 2457, 520363, 1561089, 3642541, 4683267, 6764719, 10927623, 14049801, 20294157, 32782869, 47353033, 60882471, 98348607, 142059099, 182647413, 426177297, 1278531891]

約数ペア:

[(1, 1278531891), (3, 426177297), (7, 182647413), (9, 142059099), (13, 98348607), (21, 60882471), (27, 47353033), (39, 32782869), (63, 20294157), (91, 14049801), (117, 10927623), (189, 6764719), (273, 4683267), (351, 3642541), (819, 1561089), (2457, 520363)]