51780417

素因数分解:

$3^1\times {\mathrm{13}}^2\times {\mathrm{41}}^1\times {\mathrm{47}}^1\times {\mathrm{53}}^1$

素因数の和:170

約数の個数: 48

約数和(自身を含む): 79688448

約数和(自身を除く): 27908031

約数列:

[1, 3, 13, 39, 41, 47, 53, 123, 141, 159, 169, 507, 533, 611, 689, 1599, 1833, 1927, 2067, 2173, 2491, 5781, 6519, 6929, 7473, 7943, 8957, 20787, 23829, 25051, 26871, 28249, 32383, 75153, 84747, 97149, 102131, 306393, 325663, 367237, 420979, 976989, 1101711, 1262937, 1327703, 3983109, 17260139, 51780417]

約数ペア:

[(1, 51780417), (3, 17260139), (13, 3983109), (39, 1327703), (41, 1262937), (47, 1101711), (53, 976989), (123, 420979), (141, 367237), (159, 325663), (169, 306393), (507, 102131), (533, 97149), (611, 84747), (689, 75153), (1599, 32383), (1833, 28249), (1927, 26871), (2067, 25051), (2173, 23829), (2491, 20787), (5781, 8957), (6519, 7943), (6929, 7473)]