20211156

素因数分解:

$2^2\times 3^2\times 7^1\times {\mathrm{139}}^1\times {\mathrm{577}}^1$

素因数の和:733

約数の個数: 72

約数和(自身を含む): 58909760

約数和(自身を除く): 38698604

約数列:

[1, 2, 3, 4, 6, 7, 9, 12, 14, 18, 21, 28, 36, 42, 63, 84, 126, 139, 252, 278, 417, 556, 577, 834, 973, 1154, 1251, 1668, 1731, 1946, 2308, 2502, 2919, 3462, 3892, 4039, 5004, 5193, 5838, 6924, 8078, 8757, 10386, 11676, 12117, 16156, 17514, 20772, 24234, 35028, 36351, 48468, 72702, 80203, 145404, 160406, 240609, 320812, 481218, 561421, 721827, 962436, 1122842, 1443654, 1684263, 2245684, 2887308, 3368526, 5052789, 6737052, 10105578, 20211156]

約数ペア:

[(1, 20211156), (2, 10105578), (3, 6737052), (4, 5052789), (6, 3368526), (7, 2887308), (9, 2245684), (12, 1684263), (14, 1443654), (18, 1122842), (21, 962436), (28, 721827), (36, 561421), (42, 481218), (63, 320812), (84, 240609), (126, 160406), (139, 145404), (252, 80203), (278, 72702), (417, 48468), (556, 36351), (577, 35028), (834, 24234), (973, 20772), (1154, 17514), (1251, 16156), (1668, 12117), (1731, 11676), (1946, 10386), (2308, 8757), (2502, 8078), (2919, 6924), (3462, 5838), (3892, 5193), (4039, 5004)]