19690415

素因数分解:

$5^1\times {\mathrm{23}}^1\times {\mathrm{47}}^1\times {\mathrm{3643}}^1$

素因数の和:3718

約数の個数: 16

約数和(自身を含む): 25187328

約数和(自身を除く): 5496913

約数列:

[1, 5, 23, 47, 115, 235, 1081, 3643, 5405, 18215, 83789, 171221, 418945, 856105, 3938083, 19690415]

約数ペア:

[(1, 19690415), (5, 3938083), (23, 856105), (47, 418945), (115, 171221), (235, 83789), (1081, 18215), (3643, 5405)]