199904405

素因数分解:

$5^1\times {\mathrm{71}}^1\times {\mathrm{229}}^1\times {\mathrm{2459}}^1$

素因数の和:2764

約数の個数: 16

約数和(自身を含む): 244425600

約数和(自身を除く): 44521195

約数列:

[1, 5, 71, 229, 355, 1145, 2459, 12295, 16259, 81295, 174589, 563111, 872945, 2815555, 39980881, 199904405]

約数ペア:

[(1, 199904405), (5, 39980881), (71, 2815555), (229, 872945), (355, 563111), (1145, 174589), (2459, 81295), (12295, 16259)]