18188420

素因数分解:

$2^2\times 5^1\times {\mathrm{41}}^2\times {\mathrm{541}}^1$

素因数の和:632

約数の個数: 36

約数和(自身を含む): 39222372

約数和(自身を除く): 21033952

約数列:

[1, 2, 4, 5, 10, 20, 41, 82, 164, 205, 410, 541, 820, 1082, 1681, 2164, 2705, 3362, 5410, 6724, 8405, 10820, 16810, 22181, 33620, 44362, 88724, 110905, 221810, 443620, 909421, 1818842, 3637684, 4547105, 9094210, 18188420]

約数ペア:

[(1, 18188420), (2, 9094210), (4, 4547105), (5, 3637684), (10, 1818842), (20, 909421), (41, 443620), (82, 221810), (164, 110905), (205, 88724), (410, 44362), (541, 33620), (820, 22181), (1082, 16810), (1681, 10820), (2164, 8405), (2705, 6724), (3362, 5410)]