18910900

素因数分解:

$2^2\times 5^2\times {\mathrm{29}}^1\times {\mathrm{6521}}^1$

素因数の和:6564

約数の個数: 36

約数和(自身を含む): 42458220

約数和(自身を除く): 23547320

約数列:

[1, 2, 4, 5, 10, 20, 25, 29, 50, 58, 100, 116, 145, 290, 580, 725, 1450, 2900, 6521, 13042, 26084, 32605, 65210, 130420, 163025, 189109, 326050, 378218, 652100, 756436, 945545, 1891090, 3782180, 4727725, 9455450, 18910900]

約数ペア:

[(1, 18910900), (2, 9455450), (4, 4727725), (5, 3782180), (10, 1891090), (20, 945545), (25, 756436), (29, 652100), (50, 378218), (58, 326050), (100, 189109), (116, 163025), (145, 130420), (290, 65210), (580, 32605), (725, 26084), (1450, 13042), (2900, 6521)]