642998018

素因数分解:

$2^1\times {\mathrm{13}}^2\times {\mathrm{383}}^1\times {\mathrm{4967}}^1$

素因数の和:5378

約数の個数: 24

約数和(自身を含む): 1047333888

約数和(自身を除く): 404335870

約数列:

[1, 2, 13, 26, 169, 338, 383, 766, 4967, 4979, 9934, 9958, 64571, 64727, 129142, 129454, 839423, 1678846, 1902361, 3804722, 24730693, 49461386, 321499009, 642998018]

約数ペア:

[(1, 642998018), (2, 321499009), (13, 49461386), (26, 24730693), (169, 3804722), (338, 1902361), (383, 1678846), (766, 839423), (4967, 129454), (4979, 129142), (9934, 64727), (9958, 64571)]