21157892

素因数分解:

$2^2\times 7^1\times {\mathrm{43}}^1\times {\mathrm{17573}}^1$

素因数の和:17627

約数の個数: 24

約数和(自身を含む): 43302336

約数和(自身を除く): 22144444

約数列:

[1, 2, 4, 7, 14, 28, 43, 86, 172, 301, 602, 1204, 17573, 35146, 70292, 123011, 246022, 492044, 755639, 1511278, 3022556, 5289473, 10578946, 21157892]

約数ペア:

[(1, 21157892), (2, 10578946), (4, 5289473), (7, 3022556), (14, 1511278), (28, 755639), (43, 492044), (86, 246022), (172, 123011), (301, 70292), (602, 35146), (1204, 17573)]