2158420

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{9811}}^1$

素因数の和:9831

約数の個数: 24

約数和(自身を含む): 4945248

約数和(自身を除く): 2786828

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 220, 9811, 19622, 39244, 49055, 98110, 107921, 196220, 215842, 431684, 539605, 1079210, 2158420]

約数ペア:

[(1, 2158420), (2, 1079210), (4, 539605), (5, 431684), (10, 215842), (11, 196220), (20, 107921), (22, 98110), (44, 49055), (55, 39244), (110, 19622), (220, 9811)]