129204788

素因数分解:

$2^2\times {\mathrm{19}}^2\times {\mathrm{89477}}^1$

素因数の和:89519

約数の個数: 18

約数和(自身を含む): 238637826

約数和(自身を除く): 109433038

約数列:

[1, 2, 4, 19, 38, 76, 361, 722, 1444, 89477, 178954, 357908, 1700063, 3400126, 6800252, 32301197, 64602394, 129204788]

約数ペア:

[(1, 129204788), (2, 64602394), (4, 32301197), (19, 6800252), (38, 3400126), (76, 1700063), (361, 357908), (722, 178954), (1444, 89477)]