20201405

素因数分解:

$5^1\times 7^1\times {\mathrm{163}}^1\times {\mathrm{3541}}^1$

素因数の和:3716

約数の個数: 16

約数和(自身を含む): 27882624

約数和(自身を除く): 7681219

約数列:

[1, 5, 7, 35, 163, 815, 1141, 3541, 5705, 17705, 24787, 123935, 577183, 2885915, 4040281, 20201405]

約数ペア:

[(1, 20201405), (5, 4040281), (7, 2885915), (35, 577183), (163, 123935), (815, 24787), (1141, 17705), (3541, 5705)]