19805961

素因数分解:

$3^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{49639}}^1$

素因数の和:49668

約数の個数: 16

約数和(自身を含む): 31769600

約数和(自身を除く): 11963639

約数列:

[1, 3, 7, 19, 21, 57, 133, 399, 49639, 148917, 347473, 943141, 1042419, 2829423, 6601987, 19805961]

約数ペア:

[(1, 19805961), (3, 6601987), (7, 2829423), (19, 1042419), (21, 943141), (57, 347473), (133, 148917), (399, 49639)]