21795400

素因数分解:

$2^3\times 5^2\times {\mathrm{11}}^1\times {\mathrm{9907}}^1$

素因数の和:9934

約数の個数: 48

約数和(自身を含む): 55286640

約数和(自身を除く): 33491240

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 25, 40, 44, 50, 55, 88, 100, 110, 200, 220, 275, 440, 550, 1100, 2200, 9907, 19814, 39628, 49535, 79256, 99070, 108977, 198140, 217954, 247675, 396280, 435908, 495350, 544885, 871816, 990700, 1089770, 1981400, 2179540, 2724425, 4359080, 5448850, 10897700, 21795400]

約数ペア:

[(1, 21795400), (2, 10897700), (4, 5448850), (5, 4359080), (8, 2724425), (10, 2179540), (11, 1981400), (20, 1089770), (22, 990700), (25, 871816), (40, 544885), (44, 495350), (50, 435908), (55, 396280), (88, 247675), (100, 217954), (110, 198140), (200, 108977), (220, 99070), (275, 79256), (440, 49535), (550, 39628), (1100, 19814), (2200, 9907)]