639968657318

素因数分解:

$2^1\times {\mathrm{787}}^1\times {\mathrm{3319}}^1\times {\mathrm{122503}}^1$

素因数の和:126611

約数の個数: 16

約数和(自身を含む): 961470193920

約数和(自身を除く): 321501536602

約数列:

[1, 2, 787, 1574, 3319, 6638, 122503, 245006, 2612053, 5224106, 96409861, 192819722, 406587457, 813174914, 319984328659, 639968657318]

約数ペア:

[(1, 639968657318), (2, 319984328659), (787, 813174914), (1574, 406587457), (3319, 192819722), (6638, 96409861), (122503, 5224106), (245006, 2612053)]