19489309

素因数分解:

$7^2\times {\mathrm{41}}^1\times {\mathrm{89}}^1\times {\mathrm{109}}^1$

素因数の和:253

約数の個数: 24

約数和(自身を含む): 23700600

約数和(自身を除く): 4211291

約数列:

[1, 7, 41, 49, 89, 109, 287, 623, 763, 2009, 3649, 4361, 4469, 5341, 9701, 25543, 31283, 67907, 178801, 218981, 397741, 475349, 2784187, 19489309]

約数ペア:

[(1, 19489309), (7, 2784187), (41, 475349), (49, 397741), (89, 218981), (109, 178801), (287, 67907), (623, 31283), (763, 25543), (2009, 9701), (3649, 5341), (4361, 4469)]