81657568

素因数分解:

$2^5\times {\mathrm{41}}^1\times {\mathrm{109}}^1\times {\mathrm{571}}^1$

素因数の和:731

約数の個数: 48

約数和(自身を含む): 166486320

約数和(自身を除く): 84828752

約数列:

[1, 2, 4, 8, 16, 32, 41, 82, 109, 164, 218, 328, 436, 571, 656, 872, 1142, 1312, 1744, 2284, 3488, 4469, 4568, 8938, 9136, 17876, 18272, 23411, 35752, 46822, 62239, 71504, 93644, 124478, 143008, 187288, 248956, 374576, 497912, 749152, 995824, 1991648, 2551799, 5103598, 10207196, 20414392, 40828784, 81657568]

約数ペア:

[(1, 81657568), (2, 40828784), (4, 20414392), (8, 10207196), (16, 5103598), (32, 2551799), (41, 1991648), (82, 995824), (109, 749152), (164, 497912), (218, 374576), (328, 248956), (436, 187288), (571, 143008), (656, 124478), (872, 93644), (1142, 71504), (1312, 62239), (1744, 46822), (2284, 35752), (3488, 23411), (4469, 18272), (4568, 17876), (8938, 9136)]