16920265

素因数分解:

$5^1\times {\mathrm{31}}^1\times {\mathrm{173}}^1\times {\mathrm{631}}^1$

素因数の和:840

約数の個数: 16

約数和(自身を含む): 21113856

約数和(自身を除く): 4193591

約数列:

[1, 5, 31, 155, 173, 631, 865, 3155, 5363, 19561, 26815, 97805, 109163, 545815, 3384053, 16920265]

約数ペア:

[(1, 16920265), (5, 3384053), (31, 545815), (155, 109163), (173, 97805), (631, 26815), (865, 19561), (3155, 5363)]