19638500

素因数分解:

$2^2\times 5^3\times 7^1\times {\mathrm{31}}^1\times {\mathrm{181}}^1$

素因数の和:238

約数の個数: 96

約数和(自身を含む): 50878464

約数和(自身を除く): 31239964

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 25, 28, 31, 35, 50, 62, 70, 100, 124, 125, 140, 155, 175, 181, 217, 250, 310, 350, 362, 434, 500, 620, 700, 724, 775, 868, 875, 905, 1085, 1267, 1550, 1750, 1810, 2170, 2534, 3100, 3500, 3620, 3875, 4340, 4525, 5068, 5425, 5611, 6335, 7750, 9050, 10850, 11222, 12670, 15500, 18100, 21700, 22444, 22625, 25340, 27125, 28055, 31675, 39277, 45250, 54250, 56110, 63350, 78554, 90500, 108500, 112220, 126700, 140275, 157108, 158375, 196385, 280550, 316750, 392770, 561100, 633500, 701375, 785540, 981925, 1402750, 1963850, 2805500, 3927700, 4909625, 9819250, 19638500]

約数ペア:

[(1, 19638500), (2, 9819250), (4, 4909625), (5, 3927700), (7, 2805500), (10, 1963850), (14, 1402750), (20, 981925), (25, 785540), (28, 701375), (31, 633500), (35, 561100), (50, 392770), (62, 316750), (70, 280550), (100, 196385), (124, 158375), (125, 157108), (140, 140275), (155, 126700), (175, 112220), (181, 108500), (217, 90500), (250, 78554), (310, 63350), (350, 56110), (362, 54250), (434, 45250), (500, 39277), (620, 31675), (700, 28055), (724, 27125), (775, 25340), (868, 22625), (875, 22444), (905, 21700), (1085, 18100), (1267, 15500), (1550, 12670), (1750, 11222), (1810, 10850), (2170, 9050), (2534, 7750), (3100, 6335), (3500, 5611), (3620, 5425), (3875, 5068), (4340, 4525)]