2420000

素因数分解:

$2^5\times 5^4\times {\mathrm{11}}^2$

素因数の和:52

約数の個数: 90

約数和(自身を含む): 6543999

約数和(自身を除く): 4123999

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 25, 32, 40, 44, 50, 55, 80, 88, 100, 110, 121, 125, 160, 176, 200, 220, 242, 250, 275, 352, 400, 440, 484, 500, 550, 605, 625, 800, 880, 968, 1000, 1100, 1210, 1250, 1375, 1760, 1936, 2000, 2200, 2420, 2500, 2750, 3025, 3872, 4000, 4400, 4840, 5000, 5500, 6050, 6875, 8800, 9680, 10000, 11000, 12100, 13750, 15125, 19360, 20000, 22000, 24200, 27500, 30250, 44000, 48400, 55000, 60500, 75625, 96800, 110000, 121000, 151250, 220000, 242000, 302500, 484000, 605000, 1210000, 2420000]

約数ペア:

[(1, 2420000), (2, 1210000), (4, 605000), (5, 484000), (8, 302500), (10, 242000), (11, 220000), (16, 151250), (20, 121000), (22, 110000), (25, 96800), (32, 75625), (40, 60500), (44, 55000), (50, 48400), (55, 44000), (80, 30250), (88, 27500), (100, 24200), (110, 22000), (121, 20000), (125, 19360), (160, 15125), (176, 13750), (200, 12100), (220, 11000), (242, 10000), (250, 9680), (275, 8800), (352, 6875), (400, 6050), (440, 5500), (484, 5000), (500, 4840), (550, 4400), (605, 4000), (625, 3872), (800, 3025), (880, 2750), (968, 2500), (1000, 2420), (1100, 2200), (1210, 2000), (1250, 1936), (1375, 1760)]