19901284

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{20143}}^1$

素因数の和:20179

約数の個数: 24

約数和(自身を含む): 39482240

約数和(自身を除く): 19580956

約数列:

[1, 2, 4, 13, 19, 26, 38, 52, 76, 247, 494, 988, 20143, 40286, 80572, 261859, 382717, 523718, 765434, 1047436, 1530868, 4975321, 9950642, 19901284]

約数ペア:

[(1, 19901284), (2, 9950642), (4, 4975321), (13, 1530868), (19, 1047436), (26, 765434), (38, 523718), (52, 382717), (76, 261859), (247, 80572), (494, 40286), (988, 20143)]