19900000043

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{37}}^1\times {\mathrm{6984907}}^1$

素因数の和:6984962

約数の個数: 16

約数和(自身を含む): 25480944384

約数和(自身を除く): 5580944341

約数列:

[1, 7, 11, 37, 77, 259, 407, 2849, 6984907, 48894349, 76833977, 258441559, 537837839, 1809090913, 2842857149, 19900000043]

約数ペア:

[(1, 19900000043), (7, 2842857149), (11, 1809090913), (37, 537837839), (77, 258441559), (259, 76833977), (407, 48894349), (2849, 6984907)]