20938790

素因数分解:

$2^1\times 5^1\times {\mathrm{239}}^1\times {\mathrm{8761}}^1$

素因数の和:9007

約数の個数: 16

約数和(自身を含む): 37851840

約数和(自身を除く): 16913050

約数列:

[1, 2, 5, 10, 239, 478, 1195, 2390, 8761, 17522, 43805, 87610, 2093879, 4187758, 10469395, 20938790]

約数ペア:

[(1, 20938790), (2, 10469395), (5, 4187758), (10, 2093879), (239, 87610), (478, 43805), (1195, 17522), (2390, 8761)]