11981965

素因数分解:

$5^1\times {\mathrm{23}}^1\times {\mathrm{31}}^1\times {\mathrm{3361}}^1$

素因数の和:3420

約数の個数: 16

約数和(自身を含む): 15492096

約数和(自身を除く): 3510131

約数列:

[1, 5, 23, 31, 115, 155, 713, 3361, 3565, 16805, 77303, 104191, 386515, 520955, 2396393, 11981965]

約数ペア:

[(1, 11981965), (5, 2396393), (23, 520955), (31, 386515), (115, 104191), (155, 77303), (713, 16805), (3361, 3565)]