123467920

素因数分解:

$2^4\times 5^1\times {\mathrm{89}}^1\times {\mathrm{17341}}^1$

素因数の和:17443

約数の個数: 40

約数和(自身を含む): 290305080

約数和(自身を除く): 166837160

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 89, 178, 356, 445, 712, 890, 1424, 1780, 3560, 7120, 17341, 34682, 69364, 86705, 138728, 173410, 277456, 346820, 693640, 1387280, 1543349, 3086698, 6173396, 7716745, 12346792, 15433490, 24693584, 30866980, 61733960, 123467920]

約数ペア:

[(1, 123467920), (2, 61733960), (4, 30866980), (5, 24693584), (8, 15433490), (10, 12346792), (16, 7716745), (20, 6173396), (40, 3086698), (80, 1543349), (89, 1387280), (178, 693640), (356, 346820), (445, 277456), (712, 173410), (890, 138728), (1424, 86705), (1780, 69364), (3560, 34682), (7120, 17341)]