19378750

素因数分解:

$2^1\times 5^4\times {\mathrm{37}}^1\times {\mathrm{419}}^1$

素因数の和:478

約数の個数: 40

約数和(自身を含む): 37394280

約数和(自身を除く): 18015530

約数列:

[1, 2, 5, 10, 25, 37, 50, 74, 125, 185, 250, 370, 419, 625, 838, 925, 1250, 1850, 2095, 4190, 4625, 9250, 10475, 15503, 20950, 23125, 31006, 46250, 52375, 77515, 104750, 155030, 261875, 387575, 523750, 775150, 1937875, 3875750, 9689375, 19378750]

約数ペア:

[(1, 19378750), (2, 9689375), (5, 3875750), (10, 1937875), (25, 775150), (37, 523750), (50, 387575), (74, 261875), (125, 155030), (185, 104750), (250, 77515), (370, 52375), (419, 46250), (625, 31006), (838, 23125), (925, 20950), (1250, 15503), (1850, 10475), (2095, 9250), (4190, 4625)]