21857778

素因数分解:

$2^1\times 3^2\times {\mathrm{409}}^1\times {\mathrm{2969}}^1$

素因数の和:3386

約数の個数: 24

約数和(自身を含む): 47490300

約数和(自身を除く): 25632522

約数列:

[1, 2, 3, 6, 9, 18, 409, 818, 1227, 2454, 2969, 3681, 5938, 7362, 8907, 17814, 26721, 53442, 1214321, 2428642, 3642963, 7285926, 10928889, 21857778]

約数ペア:

[(1, 21857778), (2, 10928889), (3, 7285926), (6, 3642963), (9, 2428642), (18, 1214321), (409, 53442), (818, 26721), (1227, 17814), (2454, 8907), (2969, 7362), (3681, 5938)]