21220936

素因数分解:

$2^3\times {\mathrm{11}}^1\times {\mathrm{151}}^1\times {\mathrm{1597}}^1$

素因数の和:1765

約数の個数: 32

約数和(自身を含む): 43721280

約数和(自身を除く): 22500344

約数列:

[1, 2, 4, 8, 11, 22, 44, 88, 151, 302, 604, 1208, 1597, 1661, 3194, 3322, 6388, 6644, 12776, 13288, 17567, 35134, 70268, 140536, 241147, 482294, 964588, 1929176, 2652617, 5305234, 10610468, 21220936]

約数ペア:

[(1, 21220936), (2, 10610468), (4, 5305234), (8, 2652617), (11, 1929176), (22, 964588), (44, 482294), (88, 241147), (151, 140536), (302, 70268), (604, 35134), (1208, 17567), (1597, 13288), (1661, 12776), (3194, 6644), (3322, 6388)]