67990820

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{311}}^1\times {\mathrm{643}}^1$

素因数の和:980

約数の個数: 48

約数和(自身を含む): 151901568

約数和(自身を除く): 83910748

約数列:

[1, 2, 4, 5, 10, 17, 20, 34, 68, 85, 170, 311, 340, 622, 643, 1244, 1286, 1555, 2572, 3110, 3215, 5287, 6220, 6430, 10574, 10931, 12860, 21148, 21862, 26435, 43724, 52870, 54655, 105740, 109310, 199973, 218620, 399946, 799892, 999865, 1999730, 3399541, 3999460, 6799082, 13598164, 16997705, 33995410, 67990820]

約数ペア:

[(1, 67990820), (2, 33995410), (4, 16997705), (5, 13598164), (10, 6799082), (17, 3999460), (20, 3399541), (34, 1999730), (68, 999865), (85, 799892), (170, 399946), (311, 218620), (340, 199973), (622, 109310), (643, 105740), (1244, 54655), (1286, 52870), (1555, 43724), (2572, 26435), (3110, 21862), (3215, 21148), (5287, 12860), (6220, 10931), (6430, 10574)]