28149220

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{127951}}^1$

素因数の和:127971

約数の個数: 24

約数和(自身を含む): 64487808

約数和(自身を除く): 36338588

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 220, 127951, 255902, 511804, 639755, 1279510, 1407461, 2559020, 2814922, 5629844, 7037305, 14074610, 28149220]

約数ペア:

[(1, 28149220), (2, 14074610), (4, 7037305), (5, 5629844), (10, 2814922), (11, 2559020), (20, 1407461), (22, 1279510), (44, 639755), (55, 511804), (110, 255902), (220, 127951)]