21448420

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{6661}}^1$

素因数の和:6700

約数の個数: 48

約数和(自身を含む): 53722368

約数和(自身を除く): 32273948

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 23, 28, 35, 46, 70, 92, 115, 140, 161, 230, 322, 460, 644, 805, 1610, 3220, 6661, 13322, 26644, 33305, 46627, 66610, 93254, 133220, 153203, 186508, 233135, 306406, 466270, 612812, 766015, 932540, 1072421, 1532030, 2144842, 3064060, 4289684, 5362105, 10724210, 21448420]

約数ペア:

[(1, 21448420), (2, 10724210), (4, 5362105), (5, 4289684), (7, 3064060), (10, 2144842), (14, 1532030), (20, 1072421), (23, 932540), (28, 766015), (35, 612812), (46, 466270), (70, 306406), (92, 233135), (115, 186508), (140, 153203), (161, 133220), (230, 93254), (322, 66610), (460, 46627), (644, 33305), (805, 26644), (1610, 13322), (3220, 6661)]