20270888

素因数分解:

$2^3\times {\mathrm{11}}^2\times {\mathrm{43}}^1\times {\mathrm{487}}^1$

素因数の和:558

約数の個数: 48

約数和(自身を含む): 42836640

約数和(自身を除く): 22565752

約数列:

[1, 2, 4, 8, 11, 22, 43, 44, 86, 88, 121, 172, 242, 344, 473, 484, 487, 946, 968, 974, 1892, 1948, 3784, 3896, 5203, 5357, 10406, 10714, 20812, 20941, 21428, 41624, 41882, 42856, 58927, 83764, 117854, 167528, 230351, 235708, 460702, 471416, 921404, 1842808, 2533861, 5067722, 10135444, 20270888]

約数ペア:

[(1, 20270888), (2, 10135444), (4, 5067722), (8, 2533861), (11, 1842808), (22, 921404), (43, 471416), (44, 460702), (86, 235708), (88, 230351), (121, 167528), (172, 117854), (242, 83764), (344, 58927), (473, 42856), (484, 41882), (487, 41624), (946, 21428), (968, 20941), (974, 20812), (1892, 10714), (1948, 10406), (3784, 5357), (3896, 5203)]