20441428

素因数分解:

$2^2\times 7^3\times {\mathrm{47}}^1\times {\mathrm{317}}^1$

素因数の和:389

約数の個数: 48

約数和(自身を含む): 42739200

約数和(自身を除く): 22297772

約数列:

[1, 2, 4, 7, 14, 28, 47, 49, 94, 98, 188, 196, 317, 329, 343, 634, 658, 686, 1268, 1316, 1372, 2219, 2303, 4438, 4606, 8876, 9212, 14899, 15533, 16121, 29798, 31066, 32242, 59596, 62132, 64484, 104293, 108731, 208586, 217462, 417172, 434924, 730051, 1460102, 2920204, 5110357, 10220714, 20441428]

約数ペア:

[(1, 20441428), (2, 10220714), (4, 5110357), (7, 2920204), (14, 1460102), (28, 730051), (47, 434924), (49, 417172), (94, 217462), (98, 208586), (188, 108731), (196, 104293), (317, 64484), (329, 62132), (343, 59596), (634, 32242), (658, 31066), (686, 29798), (1268, 16121), (1316, 15533), (1372, 14899), (2219, 9212), (2303, 8876), (4438, 4606)]