18899689865

素因数分解:

$5^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{71}}^1\times {\mathrm{245339}}^1$

素因数の和:245453

約数の個数: 32

約数和(自身を含む): 27132641280

約数和(自身を除く): 8232951415

約数列:

[1, 5, 7, 31, 35, 71, 155, 217, 355, 497, 1085, 2201, 2485, 11005, 15407, 77035, 245339, 1226695, 1717373, 7605509, 8586865, 17419069, 38027545, 53238563, 87095345, 121933483, 266192815, 539991139, 609667415, 2699955695, 3779937973, 18899689865]

約数ペア:

[(1, 18899689865), (5, 3779937973), (7, 2699955695), (31, 609667415), (35, 539991139), (71, 266192815), (155, 121933483), (217, 87095345), (355, 53238563), (497, 38027545), (1085, 17419069), (2201, 8586865), (2485, 7605509), (11005, 1717373), (15407, 1226695), (77035, 245339)]