18437540

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{43}}^1\times {\mathrm{1949}}^1$

素因数の和:2012

約数の個数: 48

約数和(自身を含む): 43243200

約数和(自身を除く): 24805660

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 43, 44, 55, 86, 110, 172, 215, 220, 430, 473, 860, 946, 1892, 1949, 2365, 3898, 4730, 7796, 9460, 9745, 19490, 21439, 38980, 42878, 83807, 85756, 107195, 167614, 214390, 335228, 419035, 428780, 838070, 921877, 1676140, 1843754, 3687508, 4609385, 9218770, 18437540]

約数ペア:

[(1, 18437540), (2, 9218770), (4, 4609385), (5, 3687508), (10, 1843754), (11, 1676140), (20, 921877), (22, 838070), (43, 428780), (44, 419035), (55, 335228), (86, 214390), (110, 167614), (172, 107195), (215, 85756), (220, 83807), (430, 42878), (473, 38980), (860, 21439), (946, 19490), (1892, 9745), (1949, 9460), (2365, 7796), (3898, 4730)]