20994001

素因数分解:

$7^3\times {\mathrm{97}}^1\times {\mathrm{631}}^1$

素因数の和:749

約数の個数: 16

約数和(自身を含む): 24774400

約数和(自身を除く): 3780399

約数列:

[1, 7, 49, 97, 343, 631, 679, 4417, 4753, 30919, 33271, 61207, 216433, 428449, 2999143, 20994001]

約数ペア:

[(1, 20994001), (7, 2999143), (49, 428449), (97, 216433), (343, 61207), (631, 33271), (679, 30919), (4417, 4753)]