19577800

素因数分解:

$2^3\times 5^2\times {\mathrm{11}}^2\times {\mathrm{809}}^1$

素因数の和:847

約数の個数: 72

約数和(自身を含む): 50094450

約数和(自身を除く): 30516650

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 25, 40, 44, 50, 55, 88, 100, 110, 121, 200, 220, 242, 275, 440, 484, 550, 605, 809, 968, 1100, 1210, 1618, 2200, 2420, 3025, 3236, 4045, 4840, 6050, 6472, 8090, 8899, 12100, 16180, 17798, 20225, 24200, 32360, 35596, 40450, 44495, 71192, 80900, 88990, 97889, 161800, 177980, 195778, 222475, 355960, 391556, 444950, 489445, 783112, 889900, 978890, 1779800, 1957780, 2447225, 3915560, 4894450, 9788900, 19577800]

約数ペア:

[(1, 19577800), (2, 9788900), (4, 4894450), (5, 3915560), (8, 2447225), (10, 1957780), (11, 1779800), (20, 978890), (22, 889900), (25, 783112), (40, 489445), (44, 444950), (50, 391556), (55, 355960), (88, 222475), (100, 195778), (110, 177980), (121, 161800), (200, 97889), (220, 88990), (242, 80900), (275, 71192), (440, 44495), (484, 40450), (550, 35596), (605, 32360), (809, 24200), (968, 20225), (1100, 17798), (1210, 16180), (1618, 12100), (2200, 8899), (2420, 8090), (3025, 6472), (3236, 6050), (4045, 4840)]