21256400

素因数分解:

$2^4\times 5^2\times {\mathrm{11}}^1\times {\mathrm{4831}}^1$

素因数の和:4860

約数の個数: 60

約数和(自身を含む): 55722624

約数和(自身を除く): 34466224

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 25, 40, 44, 50, 55, 80, 88, 100, 110, 176, 200, 220, 275, 400, 440, 550, 880, 1100, 2200, 4400, 4831, 9662, 19324, 24155, 38648, 48310, 53141, 77296, 96620, 106282, 120775, 193240, 212564, 241550, 265705, 386480, 425128, 483100, 531410, 850256, 966200, 1062820, 1328525, 1932400, 2125640, 2657050, 4251280, 5314100, 10628200, 21256400]

約数ペア:

[(1, 21256400), (2, 10628200), (4, 5314100), (5, 4251280), (8, 2657050), (10, 2125640), (11, 1932400), (16, 1328525), (20, 1062820), (22, 966200), (25, 850256), (40, 531410), (44, 483100), (50, 425128), (55, 386480), (80, 265705), (88, 241550), (100, 212564), (110, 193240), (176, 120775), (200, 106282), (220, 96620), (275, 77296), (400, 53141), (440, 48310), (550, 38648), (880, 24155), (1100, 19324), (2200, 9662), (4400, 4831)]