19688900

素因数分解:

$2^2\times 5^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{2557}}^1$

素因数の和:2589

約数の個数: 72

約数和(自身を含む): 53288256

約数和(自身を除く): 33599356

約数列:

[1, 2, 4, 5, 7, 10, 11, 14, 20, 22, 25, 28, 35, 44, 50, 55, 70, 77, 100, 110, 140, 154, 175, 220, 275, 308, 350, 385, 550, 700, 770, 1100, 1540, 1925, 2557, 3850, 5114, 7700, 10228, 12785, 17899, 25570, 28127, 35798, 51140, 56254, 63925, 71596, 89495, 112508, 127850, 140635, 178990, 196889, 255700, 281270, 357980, 393778, 447475, 562540, 703175, 787556, 894950, 984445, 1406350, 1789900, 1968890, 2812700, 3937780, 4922225, 9844450, 19688900]

約数ペア:

[(1, 19688900), (2, 9844450), (4, 4922225), (5, 3937780), (7, 2812700), (10, 1968890), (11, 1789900), (14, 1406350), (20, 984445), (22, 894950), (25, 787556), (28, 703175), (35, 562540), (44, 447475), (50, 393778), (55, 357980), (70, 281270), (77, 255700), (100, 196889), (110, 178990), (140, 140635), (154, 127850), (175, 112508), (220, 89495), (275, 71596), (308, 63925), (350, 56254), (385, 51140), (550, 35798), (700, 28127), (770, 25570), (1100, 17899), (1540, 12785), (1925, 10228), (2557, 7700), (3850, 5114)]