20174546

素因数分解:

$2^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{29}}^1\times {\mathrm{37}}^1\times {\mathrm{79}}^1$

素因数の和:171

約数の個数: 64

約数和(自身を含む): 39398400

約数和(自身を除く): 19223854

約数列:

[1, 2, 7, 14, 17, 29, 34, 37, 58, 74, 79, 119, 158, 203, 238, 259, 406, 493, 518, 553, 629, 986, 1073, 1106, 1258, 1343, 2146, 2291, 2686, 2923, 3451, 4403, 4582, 5846, 6902, 7511, 8806, 9401, 15022, 16037, 18241, 18802, 20461, 32074, 36482, 38947, 40922, 49691, 77894, 84767, 99382, 127687, 169534, 255374, 272629, 347837, 545258, 593369, 695674, 1186738, 1441039, 2882078, 10087273, 20174546]

約数ペア:

[(1, 20174546), (2, 10087273), (7, 2882078), (14, 1441039), (17, 1186738), (29, 695674), (34, 593369), (37, 545258), (58, 347837), (74, 272629), (79, 255374), (119, 169534), (158, 127687), (203, 99382), (238, 84767), (259, 77894), (406, 49691), (493, 40922), (518, 38947), (553, 36482), (629, 32074), (986, 20461), (1073, 18802), (1106, 18241), (1258, 16037), (1343, 15022), (2146, 9401), (2291, 8806), (2686, 7511), (2923, 6902), (3451, 5846), (4403, 4582)]